<div class="xblock xblock-public_view xblock-public_view-vertical" data-init="VerticalStudentView" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@vertical+block@vert-lesson19-textbooklinks" data-runtime-class="LmsRuntime" data-block-type="vertical" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<h2 class="hd hd-2 unit-title">Textbook Links</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+8.02.2x+2T2018+type@html+block@html-lesson19-textbooklinks">
<div class="xblock xblock-public_view xblock-public_view-html xmodule_display xmodule_HtmlBlock" data-init="XBlockToXModuleShim" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@html+block@html-lesson19-textbooklinks" data-runtime-class="LmsRuntime" data-block-type="html" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "HTMLModule"}
</script>
<p>This week we return to dipoles, but now the magnetic variety. We'll see that the fields look very much like electric dipoles and in the next lesson we'll see that their behavior in external fields (magnetic fields in this new case) is very similar. In this lesson, we pause to see that we now have half of Maxwell's equations before moving on to define the magnetic dipole moment.</p>
<p>Textbook Links</p>
<ul>
<li><a href="https://openlearninglibrary.mit.edu/courses/course-v1:MITx+8.02.2x+2T2018/pdfbook/0/#viewer-frame" target="[object Object]">Chapter 9.5: Magnetic Field of a Dipole </a></li>
</ul>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-init="VerticalStudentView" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@vertical+block@vert-L19v01" data-runtime-class="LmsRuntime" data-block-type="vertical" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<h2 class="hd hd-2 unit-title">L19v1: Magnetic Monopoles</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v01">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-init="XBlockToXModuleShim" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v01" data-runtime-class="LmsRuntime" data-block-type="video" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">L19v01: Magnetic Monopoles</h3>
<div
id="video_L19v01"
class="video closed"
data-metadata='{"speed": null, "saveStateEnabled": false, "streams": "1.00:vazSoxfOoWU", "savedVideoPosition": 0.0, "ytTestTimeout": 1500, "generalSpeed": 1.0, "poster": null, "publishCompletionUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v01/handler/publish_completion", "completionEnabled": false, "autoplay": false, "completionPercentage": 0.95, "captionDataDir": null, "duration": null, "saveStateUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v01/handler/xmodule_handler/save_user_state", "ytApiUrl": "https://www.youtube.com/iframe_api", "start": 0.0, "transcriptLanguage": "en", "lmsRootURL": "https://openlearninglibrary.mit.edu", "prioritizeHls": false, "autoAdvance": false, "transcriptLanguages": {"en": "English"}, "autohideHtml5": false, "transcriptTranslationUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v01/handler/transcript/translation/__lang__", "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v01/handler/transcript/available_translations", "ytMetadataEndpoint": "", "recordedYoutubeIsAvailable": true, "sources": [], "showCaptions": "true", "end": 0.0}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="L19v01"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
<h3 class="hd hd-4 downloads-heading sr" id="video-download-transcripts_L19v01">Downloads and transcripts</h3>
<div class="wrapper-downloads" role="region" aria-labelledby="video-download-transcripts_L19v01">
<div class="wrapper-download-transcripts">
<h4 class="hd hd-5">Transcripts</h4>
<ul class="list-download-transcripts">
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v01/handler/transcript/download" data-value="srt">Download SubRip (.srt) file</a>
</li>
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v01/handler/transcript/download" data-value="txt">Download Text (.txt) file</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-init="VerticalStudentView" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@vertical+block@vert-L19v02" data-runtime-class="LmsRuntime" data-block-type="vertical" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<h2 class="hd hd-2 unit-title">L19v2: First Two Maxwell's Equations</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v02">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-init="XBlockToXModuleShim" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v02" data-runtime-class="LmsRuntime" data-block-type="video" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">L19v02: First Two Maxwell's Equations</h3>
<div
id="video_L19v02"
class="video closed"
data-metadata='{"speed": null, "saveStateEnabled": false, "streams": "1.00:6XbR9tE3-Rs", "savedVideoPosition": 0.0, "ytTestTimeout": 1500, "generalSpeed": 1.0, "poster": null, "publishCompletionUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v02/handler/publish_completion", "completionEnabled": false, "autoplay": false, "completionPercentage": 0.95, "captionDataDir": null, "duration": null, "saveStateUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v02/handler/xmodule_handler/save_user_state", "ytApiUrl": "https://www.youtube.com/iframe_api", "start": 0.0, "transcriptLanguage": "en", "lmsRootURL": "https://openlearninglibrary.mit.edu", "prioritizeHls": false, "autoAdvance": false, "transcriptLanguages": {"en": "English"}, "autohideHtml5": false, "transcriptTranslationUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v02/handler/transcript/translation/__lang__", "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v02/handler/transcript/available_translations", "ytMetadataEndpoint": "", "recordedYoutubeIsAvailable": true, "sources": [], "showCaptions": "true", "end": 0.0}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="L19v02"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
<h3 class="hd hd-4 downloads-heading sr" id="video-download-transcripts_L19v02">Downloads and transcripts</h3>
<div class="wrapper-downloads" role="region" aria-labelledby="video-download-transcripts_L19v02">
<div class="wrapper-download-transcripts">
<h4 class="hd hd-5">Transcripts</h4>
<ul class="list-download-transcripts">
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v02/handler/transcript/download" data-value="srt">Download SubRip (.srt) file</a>
</li>
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v02/handler/transcript/download" data-value="txt">Download Text (.txt) file</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-init="VerticalStudentView" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@vertical+block@vert-cp_w7_5" data-runtime-class="LmsRuntime" data-block-type="vertical" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<h2 class="hd hd-2 unit-title">L19Q1: Magnetic Field Lines</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w7_5">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-init="XBlockToXModuleShim" data-has-score="True" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w7_5" data-runtime-class="LmsRuntime" data-block-type="problem" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
</script>
<div id="problem_checkpoint_w7_5" class="problems-wrapper" role="group"
aria-labelledby="checkpoint_w7_5-problem-title"
data-problem-id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w7_5" data-url="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w7_5/handler/xmodule_handler"
data-problem-score="0.0"
data-problem-total-possible="1.0"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="checkpoint_w7_5-problem-title" aria-describedby="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w7_5-problem-progress" tabindex="-1">
Magnetic Field Lines
</h3>
<div class="problem-progress" id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w7_5-problem-progress"></div>
<div class="problem">
<div>
<p>
The picture shows the field lines outside a permanent magnet The field lines inside the magnet point: </p>
<center>
<img src="/assets/courseware/v1/9084b8e4be27a448b27bffb41a09217c/asset-v1:MITx+8.02.2x+2T2018+type@asset+block/images_checkpoint_w7_5_1.png" width="550"/>
</center>
<p>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><div class="choicegroup capa_inputtype" id="inputtype_checkpoint_w7_5_2_1">
<fieldset aria-describedby="status_checkpoint_w7_5_2_1">
<div class="field">
<input type="radio" name="input_checkpoint_w7_5_2_1" id="input_checkpoint_w7_5_2_1_choice_1" class="field-input input-radio" value="choice_1"/><label id="checkpoint_w7_5_2_1-choice_1-label" for="input_checkpoint_w7_5_2_1_choice_1" class="response-label field-label label-inline" aria-describedby="status_checkpoint_w7_5_2_1">
<text> Up</text>
</label>
</div>
<div class="field">
<input type="radio" name="input_checkpoint_w7_5_2_1" id="input_checkpoint_w7_5_2_1_choice_2" class="field-input input-radio" value="choice_2"/><label id="checkpoint_w7_5_2_1-choice_2-label" for="input_checkpoint_w7_5_2_1_choice_2" class="response-label field-label label-inline" aria-describedby="status_checkpoint_w7_5_2_1">
<text> Down</text>
</label>
</div>
<div class="field">
<input type="radio" name="input_checkpoint_w7_5_2_1" id="input_checkpoint_w7_5_2_1_choice_3" class="field-input input-radio" value="choice_3"/><label id="checkpoint_w7_5_2_1-choice_3-label" for="input_checkpoint_w7_5_2_1_choice_3" class="response-label field-label label-inline" aria-describedby="status_checkpoint_w7_5_2_1">
<text> Left to right</text>
</label>
</div>
<div class="field">
<input type="radio" name="input_checkpoint_w7_5_2_1" id="input_checkpoint_w7_5_2_1_choice_4" class="field-input input-radio" value="choice_4"/><label id="checkpoint_w7_5_2_1-choice_4-label" for="input_checkpoint_w7_5_2_1_choice_4" class="response-label field-label label-inline" aria-describedby="status_checkpoint_w7_5_2_1">
<text> Right to left</text>
</label>
</div>
<div class="field">
<input type="radio" name="input_checkpoint_w7_5_2_1" id="input_checkpoint_w7_5_2_1_choice_5" class="field-input input-radio" value="choice_5"/><label id="checkpoint_w7_5_2_1-choice_5-label" for="input_checkpoint_w7_5_2_1_choice_5" class="response-label field-label label-inline" aria-describedby="status_checkpoint_w7_5_2_1">
<text> The field inside is zero</text>
</label>
</div>
<span id="answer_checkpoint_w7_5_2_1"/>
</fieldset>
<div class="indicator-container">
<span class="status unanswered" id="status_checkpoint_w7_5_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
</div>
</div></div>
</p>
<p>
<div class="solution-span">
<span id="solution_checkpoint_w7_5_solution_1"/>
</div></p>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="Magnetic Field Lines" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_checkpoint_w7_5" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_checkpoint_w7_5">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
</div>
</div>
<div class="notification warning notification-gentle-alert
is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="checkpoint_w7_5-problem-title">
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification warning notification-save
is-hidden"
tabindex="-1">
<span class="icon fa fa-save" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="checkpoint_w7_5-problem-title">None
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="checkpoint_w7_5-problem-title">Answers are displayed within the problem
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
</div>
"
data-graded="True">
<p class="loading-spinner">
<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-init="VerticalStudentView" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@vertical+block@vert-L19v03" data-runtime-class="LmsRuntime" data-block-type="vertical" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<h2 class="hd hd-2 unit-title">L19v3: Magnetic Dipole Moment</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v03">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-init="XBlockToXModuleShim" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v03" data-runtime-class="LmsRuntime" data-block-type="video" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">L19v03: Magnetic Dipole Moment</h3>
<div
id="video_L19v03"
class="video closed"
data-metadata='{"speed": null, "saveStateEnabled": false, "streams": "1.00:NtuXfDPCRzc", "savedVideoPosition": 0.0, "ytTestTimeout": 1500, "generalSpeed": 1.0, "poster": null, "publishCompletionUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v03/handler/publish_completion", "completionEnabled": false, "autoplay": false, "completionPercentage": 0.95, "captionDataDir": null, "duration": null, "saveStateUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v03/handler/xmodule_handler/save_user_state", "ytApiUrl": "https://www.youtube.com/iframe_api", "start": 0.0, "transcriptLanguage": "en", "lmsRootURL": "https://openlearninglibrary.mit.edu", "prioritizeHls": false, "autoAdvance": false, "transcriptLanguages": {"en": "English"}, "autohideHtml5": false, "transcriptTranslationUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v03/handler/transcript/translation/__lang__", "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v03/handler/transcript/available_translations", "ytMetadataEndpoint": "", "recordedYoutubeIsAvailable": true, "sources": [], "showCaptions": "true", "end": 0.0}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="L19v03"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
<h3 class="hd hd-4 downloads-heading sr" id="video-download-transcripts_L19v03">Downloads and transcripts</h3>
<div class="wrapper-downloads" role="region" aria-labelledby="video-download-transcripts_L19v03">
<div class="wrapper-download-transcripts">
<h4 class="hd hd-5">Transcripts</h4>
<ul class="list-download-transcripts">
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v03/handler/transcript/download" data-value="srt">Download SubRip (.srt) file</a>
</li>
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v03/handler/transcript/download" data-value="txt">Download Text (.txt) file</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-init="VerticalStudentView" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@vertical+block@vert-w8q02" data-runtime-class="LmsRuntime" data-block-type="vertical" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<h2 class="hd hd-2 unit-title">L19Q2: Magnetic Moment</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w8_1">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-init="XBlockToXModuleShim" data-has-score="True" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w8_1" data-runtime-class="LmsRuntime" data-block-type="problem" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
</script>
<div id="problem_checkpoint_w8_1" class="problems-wrapper" role="group"
aria-labelledby="checkpoint_w8_1-problem-title"
data-problem-id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w8_1" data-url="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w8_1/handler/xmodule_handler"
data-problem-score="0.0"
data-problem-total-possible="1.0"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="checkpoint_w8_1-problem-title" aria-describedby="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w8_1-problem-progress" tabindex="-1">
A rectangular loop
</h3>
<div class="problem-progress" id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w8_1-problem-progress"></div>
<div class="problem">
<div>
<center>
<img src="/assets/courseware/v1/a575afbcc0e7e10a1dac647a70a6e7de/asset-v1:MITx+8.02.2x+2T2018+type@asset+block/images_checkpoint_w8_1.svg" width="440"/>
</center>
<p>
A conducting rectangular loop of sided [mathjaxinline]a[/mathjaxinline] and [mathjaxinline]b[/mathjaxinline] is contained in the [mathjaxinline]x-y[/mathjaxinline] plane. A current [mathjaxinline]I[/mathjaxinline] is flowing through the loop in the direction shown. Calculate [mathjaxinline]\vec{\mu }[/mathjaxinline], the magnetic dipole moment. Express your answer in terms of [mathjaxinline]a[/mathjaxinline], [mathjaxinline]b[/mathjaxinline], [mathjaxinline]I[/mathjaxinline], hati for [mathjaxinline]\hat{i}[/mathjaxinline], hatj for [mathjaxinline]\hat{j}[/mathjaxinline], and hatk for [mathjaxinline]\hat{k}[/mathjaxinline] as needed. </p>
<p>
<p style="display:inline">[mathjaxinline]\vec{\mu }=[/mathjaxinline] </p>
<div class="inline" tabindex="-1" aria-label="Question 1" role="group"><div id="inputtype_checkpoint_w8_1_2_1" class="text-input-dynamath capa_inputtype inline textline">
<div class="unanswered inline">
<input type="text" name="input_checkpoint_w8_1_2_1" id="input_checkpoint_w8_1_2_1" aria-describedby="status_checkpoint_w8_1_2_1" value="" class="math" size="40"/>
<span class="trailing_text" id="trailing_text_checkpoint_w8_1_2_1"/>
<span class="status unanswered" id="status_checkpoint_w8_1_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
<p id="answer_checkpoint_w8_1_2_1" class="answer"/>
<div id="display_checkpoint_w8_1_2_1" class="equation">`{::}`</div>
<textarea style="display:none" id="input_checkpoint_w8_1_2_1_dynamath" name="input_checkpoint_w8_1_2_1_dynamath"/>
</div>
</div></div>
</p>
<p>
<div class="solution-span">
<span id="solution_checkpoint_w8_1_solution_1"/>
</div></p>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="A rectangular loop" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_checkpoint_w8_1" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_checkpoint_w8_1">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
</div>
</div>
<div class="notification warning notification-gentle-alert
is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="checkpoint_w8_1-problem-title">
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification warning notification-save
is-hidden"
tabindex="-1">
<span class="icon fa fa-save" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="checkpoint_w8_1-problem-title">None
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="checkpoint_w8_1-problem-title">Answers are displayed within the problem
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
</div>
"
data-graded="True">
<p class="loading-spinner">
<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-init="VerticalStudentView" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@vertical+block@vert-L19v04" data-runtime-class="LmsRuntime" data-block-type="vertical" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<h2 class="hd hd-2 unit-title">L19v4: Understanding Magnetic Attraction and Repulsion Through Field Lines</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v04">
<div class="xblock xblock-public_view xblock-public_view-video xmodule_display xmodule_VideoBlock" data-init="XBlockToXModuleShim" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v04" data-runtime-class="LmsRuntime" data-block-type="video" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Video"}
</script>
<h3 class="hd hd-2">L19v04: Understanding Magnetic Attraction and Repulsion Through Field Lines</h3>
<div
id="video_L19v04"
class="video closed"
data-metadata='{"speed": null, "saveStateEnabled": false, "streams": "1.00:nhtola9MsL8", "savedVideoPosition": 0.0, "ytTestTimeout": 1500, "generalSpeed": 1.0, "poster": null, "publishCompletionUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v04/handler/publish_completion", "completionEnabled": false, "autoplay": false, "completionPercentage": 0.95, "captionDataDir": null, "duration": null, "saveStateUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v04/handler/xmodule_handler/save_user_state", "ytApiUrl": "https://www.youtube.com/iframe_api", "start": 0.0, "transcriptLanguage": "en", "lmsRootURL": "https://openlearninglibrary.mit.edu", "prioritizeHls": false, "autoAdvance": false, "transcriptLanguages": {"en": "English"}, "autohideHtml5": false, "transcriptTranslationUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v04/handler/transcript/translation/__lang__", "transcriptAvailableTranslationsUrl": "/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v04/handler/transcript/available_translations", "ytMetadataEndpoint": "", "recordedYoutubeIsAvailable": true, "sources": [], "showCaptions": "true", "end": 0.0}'
data-bumper-metadata='null'
data-autoadvance-enabled="False"
data-poster='null'
tabindex="-1"
>
<div class="focus_grabber first"></div>
<div class="tc-wrapper">
<div class="video-wrapper">
<span tabindex="0" class="spinner" aria-hidden="false" aria-label="Loading video player"></span>
<span tabindex="-1" class="btn-play fa fa-youtube-play fa-2x is-hidden" aria-hidden="true" aria-label="Play video"></span>
<div class="video-player-pre"></div>
<div class="video-player">
<div id="L19v04"></div>
<h4 class="hd hd-4 video-error is-hidden">No playable video sources found.</h4>
<h4 class="hd hd-4 video-hls-error is-hidden">
Your browser does not support this video format. Try using a different browser.
</h4>
</div>
<div class="video-player-post"></div>
<div class="closed-captions"></div>
<div class="video-controls is-hidden">
<div>
<div class="vcr"><div class="vidtime">0:00 / 0:00</div></div>
<div class="secondary-controls"></div>
</div>
</div>
</div>
</div>
<div class="focus_grabber last"></div>
<h3 class="hd hd-4 downloads-heading sr" id="video-download-transcripts_L19v04">Downloads and transcripts</h3>
<div class="wrapper-downloads" role="region" aria-labelledby="video-download-transcripts_L19v04">
<div class="wrapper-download-transcripts">
<h4 class="hd hd-5">Transcripts</h4>
<ul class="list-download-transcripts">
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v04/handler/transcript/download" data-value="srt">Download SubRip (.srt) file</a>
</li>
<li class="transcript-option">
<a class="btn btn-link" href="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@video+block@L19v04/handler/transcript/download" data-value="txt">Download Text (.txt) file</a>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="xblock xblock-public_view xblock-public_view-vertical" data-init="VerticalStudentView" data-has-score="False" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@vertical+block@vert-cp_w6_4" data-runtime-class="LmsRuntime" data-block-type="vertical" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<h2 class="hd hd-2 unit-title">L19Q3: Currents in Rings</h2>
<div class="vert-mod">
<div class="vert vert-0" data-id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w6_4">
<div class="xblock xblock-public_view xblock-public_view-problem xmodule_display xmodule_ProblemBlock" data-init="XBlockToXModuleShim" data-has-score="True" data-runtime-version="1" data-graded="True" data-usage-id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w6_4" data-runtime-class="LmsRuntime" data-block-type="problem" data-request-token="1c8b68b8029411efb5f202329aca76dd" data-course-id="course-v1:MITx+8.02.2x+2T2018">
<script type="json/xblock-args" class="xblock-json-init-args">
{"xmodule-type": "Problem"}
</script>
<div id="problem_checkpoint_w6_4" class="problems-wrapper" role="group"
aria-labelledby="checkpoint_w6_4-problem-title"
data-problem-id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w6_4" data-url="/courses/course-v1:MITx+8.02.2x+2T2018/xblock/block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w6_4/handler/xmodule_handler"
data-problem-score="0.0"
data-problem-total-possible="1.0"
data-attempts-used="0"
data-content="
<h3 class="hd hd-3 problem-header" id="checkpoint_w6_4-problem-title" aria-describedby="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w6_4-problem-progress" tabindex="-1">
Force Between Wires
</h3>
<div class="problem-progress" id="block-v1:MITx+8.02.2x+2T2018+type@problem+block@checkpoint_w6_4-problem-progress"></div>
<div class="problem">
<div>
<center>
<img src="/assets/courseware/v1/a85416d83624a8ac14188562a4b932cb/asset-v1:MITx+8.02.2x+2T2018+type@asset+block/images_checkpoint_w6_4_1.png" width="550"/>
</center>
<p>
The coils above have </p>
<p>
<div class="wrapper-problem-response" tabindex="-1" aria-label="Question 1" role="group"><div class="choicegroup capa_inputtype" id="inputtype_checkpoint_w6_4_2_1">
<fieldset aria-describedby="status_checkpoint_w6_4_2_1">
<div class="field">
<input type="radio" name="input_checkpoint_w6_4_2_1" id="input_checkpoint_w6_4_2_1_choice_1" class="field-input input-radio" value="choice_1"/><label id="checkpoint_w6_4_2_1-choice_1-label" for="input_checkpoint_w6_4_2_1_choice_1" class="response-label field-label label-inline" aria-describedby="status_checkpoint_w6_4_2_1">
<text> parallel currents that attract</text>
</label>
</div>
<div class="field">
<input type="radio" name="input_checkpoint_w6_4_2_1" id="input_checkpoint_w6_4_2_1_choice_2" class="field-input input-radio" value="choice_2"/><label id="checkpoint_w6_4_2_1-choice_2-label" for="input_checkpoint_w6_4_2_1_choice_2" class="response-label field-label label-inline" aria-describedby="status_checkpoint_w6_4_2_1">
<text> parallel currents that repel</text>
</label>
</div>
<div class="field">
<input type="radio" name="input_checkpoint_w6_4_2_1" id="input_checkpoint_w6_4_2_1_choice_3" class="field-input input-radio" value="choice_3"/><label id="checkpoint_w6_4_2_1-choice_3-label" for="input_checkpoint_w6_4_2_1_choice_3" class="response-label field-label label-inline" aria-describedby="status_checkpoint_w6_4_2_1">
<text> opposite currents that attract</text>
</label>
</div>
<div class="field">
<input type="radio" name="input_checkpoint_w6_4_2_1" id="input_checkpoint_w6_4_2_1_choice_4" class="field-input input-radio" value="choice_4"/><label id="checkpoint_w6_4_2_1-choice_4-label" for="input_checkpoint_w6_4_2_1_choice_4" class="response-label field-label label-inline" aria-describedby="status_checkpoint_w6_4_2_1">
<text> opposite currents that repel</text>
</label>
</div>
<span id="answer_checkpoint_w6_4_2_1"/>
</fieldset>
<div class="indicator-container">
<span class="status unanswered" id="status_checkpoint_w6_4_2_1" data-tooltip="Not yet answered.">
<span class="sr">unanswered</span><span class="status-icon" aria-hidden="true"/>
</span>
</div>
</div></div>
</p>
<p>
<div class="solution-span">
<span id="solution_checkpoint_w6_4_solution_1"/>
</div></p>
</div>
<div class="action">
<input type="hidden" name="problem_id" value="Force Between Wires" />
<div class="submit-attempt-container">
<button type="button" class="submit btn-brand" data-submitting="Submitting" data-value="Submit" data-should-enable-submit-button="True" aria-describedby="submission_feedback_checkpoint_w6_4" >
<span class="submit-label">Submit</span>
</button>
<div class="submission-feedback" id="submission_feedback_checkpoint_w6_4">
<span class="sr">Some problems have options such as save, reset, hints, or show answer. These options follow the Submit button.</span>
</div>
</div>
<div class="problem-action-buttons-wrapper">
</div>
</div>
<div class="notification warning notification-gentle-alert
is-hidden"
tabindex="-1">
<span class="icon fa fa-exclamation-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="checkpoint_w6_4-problem-title">
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification warning notification-save
is-hidden"
tabindex="-1">
<span class="icon fa fa-save" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="checkpoint_w6_4-problem-title">None
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
<div class="notification general notification-show-answer
is-hidden"
tabindex="-1">
<span class="icon fa fa-info-circle" aria-hidden="true"></span>
<span class="notification-message" aria-describedby="checkpoint_w6_4-problem-title">Answers are displayed within the problem
</span>
<div class="notification-btn-wrapper">
<button type="button" class="btn btn-default btn-small notification-btn review-btn sr">Review</button>
</div>
</div>
</div>
"
data-graded="True">
<p class="loading-spinner">
<i class="fa fa-spinner fa-pulse fa-2x fa-fw"></i>
<span class="sr">Loading…</span>
</p>
</div>
</div>
</div>
</div>
</div>
© All Rights Reserved