{"id":8942,"date":"2018-02-08T13:01:31","date_gmt":"2018-02-08T07:31:31","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/?p=8942"},"modified":"2019-03-05T11:23:38","modified_gmt":"2019-03-05T05:53:38","slug":"electromagnetic-induction-class-12-notes-physics","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/electromagnetic-induction-class-12-notes-physics\/","title":{"rendered":"Electromagnetic Induction Class 12 Notes Physics"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/electromagnetic-induction-class-12-notes-physics\/#CBSE_Guide_Electromagnetic_Induction_class_12_Notes\" >CBSE Guide Electromagnetic Induction class 12 Notes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/electromagnetic-induction-class-12-notes-physics\/#Class_12_Physics_notes_Chapter_6_Electromagnetic_Induction\" >Class 12 Physics notes Chapter 6 Electromagnetic Induction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/electromagnetic-induction-class-12-notes-physics\/#CBSE_Class_12_Physics_Revision_Notes_Chapter_6_Electromagnetic_Induction\" >CBSE Class 12 Physics Revision Notes Chapter 6 Electromagnetic Induction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/electromagnetic-induction-class-12-notes-physics\/#_CBSE_Class_12_Revision_Notes_and_Key_Points\" >\u00a0CBSE Class 12 Revision Notes and Key Points<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong>CBSE Class 12 Physics Chapter 6 Electromagnetic Induction notes<\/strong> in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Electromagnetic Induction class 12 Notes latest chapter wise notes for quick preparation of CBSE board exams and school-based annual examinations. Class 12 Physics notes on chapter 6 Electromagnetic Induction are also available for download in CBSE Guide website.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Guide_Electromagnetic_Induction_class_12_Notes\"><\/span><strong>CBSE Guide Electromagnetic Induction class 12 Notes<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>CBSE guide notes are the comprehensive notes which covers the latest syllabus of CBSE and NCERT. It includes all the topics given in NCERT class 12 Physics textbook. Users can download CBSE guide quick revision notes from myCBSEguide mobile app and my CBSE guide website.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Class_12_Physics_notes_Chapter_6_Electromagnetic_Induction\"><\/span><strong>Class 12 Physics notes Chapter 6 Electromagnetic Induction<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Download CBSE class 12th revision notes for chapter 6 Electromagnetic Induction in PDF format for free. Download revision notes for Electromagnetic Induction class 12 Notes and score high in exams. These are the Electromagnetic Induction class 12 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter 6 in minutes. Revision notes in exam days is one of the best tips recommended by teachers during exam days.<\/p>\n<p style=\"text-align: center;\"><strong><a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-12-physics\/1251\/cbse-revision-notes\/7\/\">Download Revision Notes as PDF<\/a><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_Class_12_Physics_Revision_Notes_Chapter_6_Electromagnetic_Induction\"><\/span><strong>CBSE Class 12 Physics Revision Notes Chapter 6 Electromagnetic Induction<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong>Magnetic Flux: <\/strong>Magnetic flux through a plane of area d<em>A\u00a0<\/em>placed in a uniform magnetic field B <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\phi =\\int{\\overrightarrow{B}.d\\overrightarrow{A}}=BA\\ cos\\ \\theta\" alt=\"Electromagnetic Induction Class 12 Notes PhysicsElectromagnetic Induction Class 12 Notes Physics\" width=\"188\" height=\"37\" \/><\/span><\/span>\u00a0where\u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\theta\" \/><\/span><\/span>\u00a0is the angle between magnetic field lines and area vector of the surface.<\/li>\n<li><strong>Dimensions of magnetic flux:\u00a0<\/strong><span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\left[ {M{L^2}{T^{ - 2}}{A^{ - 1}}} \\right]\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"105\" height=\"20\" \/><\/span><\/span><\/li>\n<li><strong>SI unit:- <\/strong>Weber (Wb)<\/li>\n<li><strong>Faraday\u2019s Law:<\/strong><br \/>\n<strong>a) First Law:<\/strong> whenever there is a change in the magnetic flux linked with a circuit with time, an induced emf is produced in the circuit which lasts as long as the change in magnetic flux continues.<br \/>\n<strong>b) Second Law:<\/strong>\u00a0The magnitude of the\u00a0induced emf is directly proportional to the rate of\u00a0change of magnetic flux linked with the closed circuit.\u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\left| \\varepsilon \\right|\\alpha {{d\\phi } \\over {dt}}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"50\" height=\"33\" \/><\/span><\/span><\/li>\n<li><strong>Lenz\u2019s Law: <\/strong>The direction of the induced emf or current in the circuit is such that it opposes the cause due to which it is produced i.e. it opposes the change in magnetic flux, so that-<br \/>\n<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?E=-N\\left( \\frac{d\\phi }{dt} \\right)\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"110\" height=\"41\" \/><\/span><\/span>\u00a0Where N is the number of turns in the coil<br \/>\nLenz\u2019s law is based on energy conservation.<\/li>\n<li><strong>Induced EMF and Induced Current:<\/strong>\u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?E=-N\\frac{d\\phi }{dt}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"84\" height=\"33\" \/><\/span><\/span>\u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?=-\\frac{N({{\\phi }_{2}}-{{\\phi }_{1}})}{t}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"116\" height=\"37\" \/><\/span><\/span><br \/>\nCharge depends only on net change in flux does not depends on time.<\/li>\n<\/ul>\n<ol>\n<li>Induced EMF,<\/li>\n<li>Induced current, <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\begin{align} &amp;amp; I=\\frac{E}{R}=-\\frac{N}{R}\\left( \\frac{d\\phi }{dt} \\right) \\\\ &amp;amp; =-\\frac{N}{R}\\frac{\\left( {{\\phi }_{2}}-{{\\phi }_{1}} \\right)}{t} \\\\ \\end{align}\" \/><\/span><\/span><\/li>\n<\/ol>\n<ul>\n<li><strong>Induced Emf due to Linear Motion of a Conducting Rod in a Uniform Magnetic Field<\/strong><br \/>\nThe induced emf, <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?E=\\overrightarrow{l}.(\\overrightarrow{v} \\times \\overrightarrow{B})\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"121\" height=\"25\" \/><\/span><\/span><br \/>\nIf\u00a0 <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\overrightarrow{l},\\overrightarrow{v}\\text{ }and\\overrightarrow{B}\" \/><\/span><\/span>\u00a0are perpendicular to each other, then <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?E=Bvl\" \/><\/span><\/span><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/review\/4673_img_01.jpg\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"285\" height=\"230\" \/><\/li>\n<li>Fleming&#8217;s Right Hand Rule is used to find the direction of induced current set up in the conductor.<\/li>\n<li><strong>Induced EMF due to Rotation of a Conducting Rod in a Uniform Magnetic Field:<\/strong>The induced emf, <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?E=\\frac{1}{2}B\\omega {{l}^{2}}=B\\pi n{{l}^{2}}=BAn\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"211\" height=\"34\" \/><\/span><\/span>\u00a0Where n is the frequency of rotation of the conducting rod.<\/li>\n<li><strong>Induced EMF due to Rotation of a Metallic Disc in a Uniform Magnetic Field:<\/strong>\u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{{E}_{OA}}=\\frac{1}{2}B\\omega {{R}^{2}}=B\\pi {{R}^{2}}n=BAn\" \/><\/span><\/span><\/li>\n<li><strong>Induced EMF, Current and Energy Conservation in a Rectangular Loop Moving in a Non \u2013 Uniform Magnetic Field with a Constant Velocity:<\/strong><\/li>\n<li>Energy supplied in this process appears in the form of heat energy in the circuit.<\/li>\n<\/ul>\n<ol>\n<li>The net increase in flux crossing through the coil in time \u0394t is, <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\Delta \\phi =({{B}_{2}}-{{B}_{1}})lv\\Delta t\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"153\" height=\"18\" \/><\/span><\/span><\/li>\n<li>Induced emf in the coil is, <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?E=({{B}_{1}}-{{B}_{2}})lv\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"122\" height=\"18\" \/><\/span><\/span><\/li>\n<li>If the resistance of the coil is R, then the induced current in the coil is, <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?I=\\frac{E}{R}=\\frac{({{B}_{1}}-{{B}_{2}})}{R}lv\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"161\" height=\"37\" \/><\/span><\/span><\/li>\n<li>Resultant force acting on the coil is <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?F=Il({{B}_{1}}-{{B}_{2}})(\\text{ towards left)}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"224\" height=\"18\" \/><\/span><\/span><\/li>\n<li>The work done against the resultant force <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?W={{({{B}_{1}}-{{B}_{2}})}^{2}}\\frac{{{l}^{2}}{{v}^{2}}}{R}\\Delta t\\text{ joule}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"213\" height=\"37\" \/><\/span><\/span><\/li>\n<li>Energy supplied due to flow of current I in time \u0394t is, <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?H={{I}^{2}}R\\Delta t\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"86\" height=\"15\" \/><\/span><\/span><br \/>\n<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?Or\\text{ }H={{({{B}_{1}}-{{B}_{2}})}^{2}}\\frac{{{l}^{2}}{{v}^{2}}}{R}\\Delta t\\text{ joule}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"237\" height=\"37\" \/><\/span><\/span><br \/>\nOr H = W<\/li>\n<\/ol>\n<ul>\n<li><strong>Rotation of Rectangular Coil in a Uniform Magnetic Field:<\/strong><\/li>\n<\/ul>\n<ol>\n<li>Magnetic flux linked with coil<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\phi = NBA\\cos \\theta = NBA\\cos \\omega t\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"217\" height=\"15\" \/><\/span><\/span><\/li>\n<li>Induced emf in the coil <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?E=\\frac{d\\phi }{dt}=BAN\\omega \\sin \\omega t={{E}_{0}}\\sin \\omega t\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"259\" height=\"33\" \/><\/span><\/span><\/li>\n<li>Induced current in the coil. <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?I = {E \\over R} = {{NBA\\omega } \\over R}\\sin \\omega t = {{{E_o}} \\over R}\\sin \\omega t\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"257\" height=\"34\" \/><\/span><\/span><\/li>\n<li>Both Emf and current induced in the coil are alternating.<\/li>\n<\/ol>\n<ul>\n<li><strong>Self-Induction and Self Inductance:<\/strong><\/li>\n<\/ul>\n<ol>\n<li>The phenomenon in which an induced emf is produced by changing the current in a coil is called self\u00a0induction.<br \/>\n<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\begin{align}&amp;amp; \\phi \\propto I\\text{ or }\\phi =LI \\\\ &amp;amp; or\\text{ L=}\\frac{\\phi }{I} \\\\ \\end{align}\" \/><\/span><\/span><br \/>\n<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\begin{align} &amp;amp; E=-L\\frac{dI}{dt} \\\\ &amp;amp; L=\\frac{E}{-(dI\/dt)} \\\\ \\end{align}\" \/><\/span><\/span><br \/>\nwhere L is a constant, called self inductance or coefficient of self \u2013 induction.<\/li>\n<li>S.I. Unit- Henry (H)<\/li>\n<li>Dimension- [ML<sup>2<\/sup>T<sup>-2<\/sup>A<sup>-2<\/sup>]<\/li>\n<li>Self inductance of a circular coil <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?L=\\frac{{{\\mu }_{0}}{{N}^{2}}\\pi R}{2}=\\frac{{{\\mu }_{0}}{{N}^{2}}A}{2R}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"177\" height=\"37\" \/><\/span><\/span><\/li>\n<li>Self inductance of a solenoid <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?L=\\frac{{{\\mu }_{0}}{{N}^{2}}A}{l}\" \/><\/span><\/span><\/li>\n<li>Two coils of self \u2013 inductances L<sub>1<\/sub> and L<sub>2<\/sub>, placed far away (i.e., without coupling) from each other.<\/li>\n<li>For series combination: <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?L={{L}_{1}}+{{L}_{2}}.......{{L}_{n}}\" \/><\/span><\/span><\/li>\n<li>For parallel combination:<\/li>\n<\/ol>\n<ul>\n<li><strong>Mutual Induction and Mutual Inductance:<\/strong><\/li>\n<\/ul>\n<ol>\n<li>On changing the current in one coil, if the magnetic flux linked with a second coil changes and induced emf is produced in that coil, then this phenomenon is called mutual induction.<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{{\\phi }_{2}}\\propto {{I}_{1}}\\text{ or }{{\\phi }_{2}}=M{{I}_{1}}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"150\" height=\"15\" \/><\/span><\/span>Or \u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?M=\\frac{{{\\phi }_{2}}}{{{I}_{1}}}\" \/><\/span><\/span><span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{{E}_{2}}=-\\frac{d{{\\phi }_{2}}}{dt}=-M\\frac{d{{I}_{1}}}{dt}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"164\" height=\"33\" \/><\/span><\/span><span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?M=\\frac{{{E}_{2}}}{-(d{{I}_{1}}\/dt)}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"115\" height=\"38\" \/><\/span><\/span>\u00a0 Thefore, M<sub>12<\/sub> = M<sub>21<\/sub> = M<\/li>\n<li>Mutual inductance two coaxial solenoids <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?M=\\frac{{{\\mu }_{0}}{{N}_{1}}{{N}_{2}}A}{l}\" alt=\"Electromagnetic Induction Class 12 Notes Physics\" width=\"114\" height=\"34\" \/><\/span><\/span><\/li>\n<li>If two coils of self- inductance L<sub>1<\/sub> and L<sub>2<\/sub> are wound over each other, the mutual inductance is, <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?M=K\\sqrt{{{L}_{1}}{{L}_{2}}}\" \/><\/span><\/span>\u00a0Where K is called coupling constant.<\/li>\n<li>Mutual inductance for two coils wound in same direction and connected in series <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?L={{L}_{1}}+{{L}_{2}}+2M\" \/><\/span><\/span><\/li>\n<li>Mutual inductance for two coils wound in opposite direction and connected in series <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?L={{L}_{1}}+{{L}_{2}}-2M\" \/><\/span><\/span><\/li>\n<li>Mutual inductance for two coils in parallel <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?L=\\frac{{{L}_{1}}{{L}_{2}}-{{M}^{2}}}{{{L}_{1}}+{{L}_{2}}\\pm M}\" \/><\/span><\/span>\u200b<\/li>\n<\/ol>\n<ul>\n<li><strong>Energy Stored in an Inductor: <\/strong><span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{{U}_{B}}=\\frac{1}{2}L{{I}^{2}}_{\\max }\" \/><\/span><\/span><\/li>\n<li><strong>Magnetic Energy Density: <\/strong><span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{{U}_{B}}=\\frac{{{B}^{2}}}{2{{\\mu }_{0}}}\" \/><\/span><\/span><\/li>\n<li><strong>Eddy Current: <\/strong>When a conductor is moved in a magnetic field, induced currents are generated in the whole volume of the conductor. These currents are called eddy currents.<\/li>\n<li><strong>Transformer:<\/strong><\/li>\n<\/ul>\n<ol>\n<li>It is a device which changes the magnitude of alternating voltage or current.<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\frac{{{E}_{s}}}{{{E}_{p}}}=\\frac{{{n}_{s}}}{{{n}_{p}}}=K\" \/><\/span><\/span><\/li>\n<li>For ideal transformer: <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\frac{{{I}_{p}}}{{{I}_{s}}}=\\frac{{{n}_{s}}}{{{n}_{p}}}\" \/><\/span><\/span><\/li>\n<li>In an ideal transformer: <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{{E}_{p}}{{I}_{p}}={{E}_{s}}{{I}_{s}}\" \/><\/span><\/span><\/li>\n<li>In step \u2013 up transformer:\u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{n_s} &amp;gt; {n_p}{\\text{ or K \u00a0&amp;gt; \u00a01}}\" \/><\/span><\/span>\u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{{\\text{E}}_s} &amp;gt; {E_p}{\\text{ and }}{{\\text{I}}_s} &amp;lt; {I_p}\" \/><\/span><\/span><\/li>\n<li>In step \u2013 down transformer:\u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{n_s} &amp;lt; {n_p}{\\text{ or K\u00a0 &amp;lt;\u00a0 1}}\" \/><\/span><\/span>\u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{{\\text{E}}_s} &amp;lt; {E_p}{\\text{ and }}{{\\text{I}}_s} &amp;gt; {I_p}\" \/><\/span><\/span><\/li>\n<li>Efficiency <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\eta =\\frac{{{E}_{s}}{{I}_{s}}}{{{E}_{p}}{{I}_{p}}}\\times100\\%\" \/><\/span><\/span><\/li>\n<\/ol>\n<ul>\n<li><strong>Generator or Dynamo:\u00a0<\/strong>It is a device by which mechanical energy is converted into electrical energy. It is based on the principle of electromagnetic induction.<\/li>\n<li><strong>Different Types of Generator:<\/strong><\/li>\n<\/ul>\n<ol>\n<li>AC Generator-\u00a0It consists of field magnet, armature, slip rings and brushes.<\/li>\n<li>DC Generator-\u00a0It consists of field magnet, armature, commutator and brushes.<\/li>\n<\/ol>\n<ul>\n<li><strong>Motor:\u00a0<\/strong>It is a device which converts electrical energy into mechanical energy.<br \/>\nBack emf <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?e\\propto \\omega\" \/><\/span><\/span><br \/>\nCurrent flowing in the coil, <span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\begin{align}\u00a0 &amp;amp; {{i}_{a}}=\\frac{E-{{e}_{b}}}{R} \\\\ \u00a0&amp;amp; E={{e}_{b}}+{{i}_{a}}R \\\\ \\end{align}\" \/><\/span><\/span><br \/>\nWhere R is the resistance of the coil.<br \/>\nOut put Power = \u00a0<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?{{i}_{a}}{{e}_{b}}\" \/><\/span><\/span><br \/>\nEfficiency,<span class=\"cke_widget_wrapper cke_widget_inline cke_widget_selected\"><span class=\"math-tex cke_widget_element\"><img decoding=\"async\" src=\"https:\/\/elpiscart.com\/cgi-bin\/mathtex.cgi?\\eta =\\frac{{{e}_{b}}}{E}\\times 100%\" \/><\/span><\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"_CBSE_Class_12_Revision_Notes_and_Key_Points\"><\/span><strong>\u00a0<\/strong><strong>CBSE Class 12 Revision Notes and Key Points<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Electromagnetic Induction class 12 Notes. CBSE quick revision note for class-12 Physics, Chemistry, Maths, Biology and other subject are very helpful to revise the whole syllabus during exam days. The revision notes covers all important formulas and concepts given in the chapter. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you. These notes will certainly save your time during stressful exam days.<\/p>\n<ul>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-physics\/1251\/cbse-revision-notes\/7\/\">Physics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-chemistry\/1267\/cbse-revision-notes\/7\/\">Chemistry<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-mathematics\/1284\/cbse-revision-notes\/7\/\">Mathematics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-biology\/1298\/cbse-revision-notes\/7\/\">Biology<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-accountancy\/1315\/cbse-revision-notes\/7\/\">Accountancy<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-economics\/1327\/cbse-revision-notes\/7\/\">Economics<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-business-studies\/1727\/cbse-revision-notes\/7\/\">Business Studies<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-computer-science\/1851\/cbse-revision-notes\/7\/\">Computer Science<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-informatics-practices\/1873\/cbse-revision-notes\/7\/\">Informatics Practices<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-english-core\/1855\/cbse-revision-notes\/7\/\">English Core<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-history\/1869\/cbse-revision-notes\/7\/\">History<\/a><\/li>\n<li><a href=\"http:\/\/mycbseguide.com\/downloads\/cbse-class-12-physical-education\/1877\/cbse-revision-notes\/7\/\">Physical Education<\/a><\/li>\n<\/ul>\n<p>To download Electromagnetic Induction class 12 Notes, sample paper for class 12 Physics, Chemistry, Biology, History, Political Science, Economics, Geography, Computer Science, Home Science, Accountancy, Business Studies, and Home Science; do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n<ul>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/electric-charges-fields-class-12-notes-physics\/\">Electric Charges and Fields class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/electrostatic-potential-capacitance-class-12-notes-physics\/\">Electrostatic Potential and Capacitance class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/current-electricity-class-12-notes-physics\/\">Current Electricity class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/moving-charges-magnetism-class-12-notes-physics\/\">Moving Charges and Magnetism class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/magnetism-matter-class-12-notes-physics\/\">Magnetism and Matter class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/alternating-current-class-12-notes-physics\/\">Alternating Current class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/electromagnetic-waves-class-12-notes-physics\/\">Electromagnetic Waves class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/ray-optics-and-optical-class-12-note-physics\/\">Ray Optics and Optical class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/wave-optics-class-12-notes-physics\/\">Wave Optics class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/dual-nature-radiation-matter-class-12-notes-physics\/\">Dual Nature of Radiation and Matter class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/atoms-class-12-notes-physics\/\">Atoms class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/nuclei-class-12-notes-physics\/\">Nuclei class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/electronic-devices-class-12-notes-physics\/\">Electronic Devices class 12 Notes Physics<\/a><\/li>\n<li class=\"entry-title\"><a href=\"https:\/\/mycbseguide.com\/blog\/communication-systems-class-12-notes-physics\/\">Communication Systems class 12 Notes Physics<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>CBSE Class 12 Physics Chapter 6 Electromagnetic Induction notes in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides Electromagnetic Induction class 12 Notes latest chapter wise notes for quick preparation of CBSE board exams and school-based annual examinations. Class 12 Physics notes on chapter 6 &#8230; <a title=\"Electromagnetic Induction Class 12 Notes Physics\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/electromagnetic-induction-class-12-notes-physics\/\" aria-label=\"More on Electromagnetic Induction Class 12 Notes Physics\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":8891,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[48,456],"tags":[457,150,472,458,426,240],"class_list":["post-8942","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cbse-class-12","category-revision-notes","tag-cbse-notes","tag-cbse-notes-and-key-points","tag-electromagnetic-induction","tag-physics-notes","tag-quick-revision","tag-quick-revision-notes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Electromagnetic Induction Class 12 Notes Physics<\/title>\n<meta name=\"description\" content=\"Electromagnetic Induction class 12 Notes Physics chapter 6 in PDF format for free download. 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