{"id":213610,"date":"2025-05-12T07:45:19","date_gmt":"2025-05-12T07:45:19","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=213610"},"modified":"2025-05-12T07:45:21","modified_gmt":"2025-05-12T07:45:21","slug":"explain-why-its-d-if-released-from-rest-the-current-loop-will-move-upward-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/05\/12\/explain-why-its-d-if-released-from-rest-the-current-loop-will-move-upward-2\/","title":{"rendered":"Explain why its D If released from rest, the current loop will Move upward."},"content":{"rendered":"\n

explain why its D If released from rest, the current loop will Move upward. Move downward. Rotate clockwise. Rotate counterclockwise. Do something not listed here.<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/strong><\/p>\n\n\n\n

To answer this question thoroughly, we need to consider the behavior of a current-carrying loop<\/strong> placed in a magnetic field<\/strong>. The correct answer is:<\/p>\n\n\n\n

D. Rotate counterclockwise.<\/strong><\/p>\n\n\n\n

\n\n\n\n

Explanation (300+ words):<\/strong><\/h3>\n\n\n\n

A current loop placed in a magnetic field will experience a torque due to the interaction between the magnetic field<\/strong> and the current<\/strong> flowing through the loop. This principle is based on the Lorentz force<\/strong>, where a current-carrying wire in a magnetic field experiences a force given by: F\u20d7=I(L\u20d7\u00d7B\u20d7)\\vec{F} = I (\\vec{L} \\times \\vec{B})<\/p>\n\n\n\n

Where:<\/p>\n\n\n\n

    \n
  • II is the current,<\/li>\n\n\n\n
  • L\u20d7\\vec{L} is the vector length of the wire segment,<\/li>\n\n\n\n
  • B\u20d7\\vec{B} is the magnetic field,<\/li>\n\n\n\n
  • \u00d7\\times represents the vector cross product.<\/li>\n<\/ul>\n\n\n\n

    If a rectangular current loop is placed in a uniform magnetic field, different sides of the loop will experience magnetic forces in different directions. Specifically:<\/p>\n\n\n\n

      \n
    • The top and bottom sides<\/strong> (horizontal segments) will experience equal and opposite forces that cancel out in translation, but not in rotation.<\/li>\n\n\n\n
    • The left and right sides<\/strong> (vertical segments) experience magnetic forces in opposite directions<\/strong>, producing a torque<\/strong>.<\/li>\n<\/ul>\n\n\n\n

      This torque tends to rotate the loop<\/strong>, aligning its magnetic moment \u03bc\u20d7\\vec{\\mu} with the magnetic field B\u20d7\\vec{B}. The magnetic moment of a current loop is: \u03bc\u20d7=I\u22c5A\u20d7\\vec{\\mu} = I \\cdot \\vec{A}<\/p>\n\n\n\n

      Where A\u20d7\\vec{A} is the area vector (perpendicular to the loop’s plane and following the right-hand rule).<\/p>\n\n\n\n

      The loop will rotate<\/strong> in a direction that aligns the magnetic moment with the external magnetic field. If the magnetic field points into the page and current flows clockwise<\/strong> when viewed from above, the magnetic moment points downward<\/strong>, opposite the field. The system is in an unstable equilibrium and will rotate counterclockwise<\/strong> to reduce potential energy.<\/p>\n\n\n\n

      Thus, when released from rest, the loop rotates counterclockwise<\/strong> to align with the magnetic field. Hence, the correct answer is:<\/p>\n\n\n\n

      \n

      D. Rotate counterclockwise<\/strong><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"

      explain why its D If released from rest, the current loop will Move upward. Move downward. Rotate clockwise. Rotate counterclockwise. Do something not listed here. The Correct Answer and Explanation is: To answer this question thoroughly, we need to consider the behavior of a current-carrying loop placed in a magnetic field. The correct answer is: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-213610","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/213610","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=213610"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/213610\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=213610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=213610"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=213610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}