{"id":38306,"date":"2022-05-11T12:00:18","date_gmt":"2022-05-11T06:30:18","guid":{"rendered":"https:\/\/www.cbselabs.com\/?p=38306"},"modified":"2022-05-11T12:47:59","modified_gmt":"2022-05-11T07:17:59","slug":"magnetism-matter-cbse-notes-class-12-physics","status":"publish","type":"post","link":"https:\/\/www.cbselabs.com\/magnetism-matter-cbse-notes-class-12-physics\/","title":{"rendered":"Magnetism And Matter Class 12 Notes Chapter 5"},"content":{"rendered":"<p><a href=\"https:\/\/www.cbselabs.com\/cbse-notes-class-12-physics\/\">Class 12 Physics Notes<\/a> students can refer to the Magnetism And Matter Class 12 Notes Chapter 5 https:\/\/www.cbselabs.com\/magnetism-matter-cbse-notes-class-12-physics\/ Pdf here. They can also access the CBSE Class 12 Magnetism And Matter Chapter 5 Notes while gearing up for their Board exams.<\/p>\n<h2>Magnetism And Matter Class 12 Notes Chapter 5<\/h2>\n<p><strong>Magnetism And Matter Class 12 Notes Chapter 5<\/strong><\/p>\n<p><strong>1. The magnetic dipole<\/strong> moment of a magnetic dipole is given by<br \/>\nM = m \u00d7 2I<br \/>\nwhere, m is pole strength and 2I is dipole length directed from S to N.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175307\" src=\"https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-1.png?resize=119%2C85&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Notes Chapter 5 Img 1\" width=\"119\" height=\"85\" data-recalc-dims=\"1\" \/><br \/>\nThe SI unit of magnetic dipole moment is A-m<sup>2<\/sup> or J\/T.<br \/>\nIt is a vector quantity and its direction is from South pole to North pole.<br \/>\n<strong>2. Coulomb\u2019s Law in Magnetism<\/strong><br \/>\nMagnitude of force acting between two magnetic poles is given by<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175308\" src=\"https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-2.png?resize=536%2C261&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Notes Chapter 5 Img 2\" width=\"536\" height=\"261\" srcset=\"https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-2.png?w=536&amp;ssl=1 536w, https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-2.png?resize=300%2C146&amp;ssl=1 300w\" sizes=\"(max-width: 536px) 100vw, 536px\" data-recalc-dims=\"1\" \/><br \/>\nwhere, m<sub>1<\/sub> and m<sub>2<\/sub> are magnetic strength of poles and k is magnetic force constant. Its SI unit is A-m.<\/p>\n<p><strong>Class 12 Physics Chapter 5 Notes<\/strong><\/p>\n<p><strong>3. Magnetic Field Lines<\/strong> These are imaginary lines which give pictorial representation for the magnetic field inside and around the magnet.<br \/>\nTheir properties are given as below:<br \/>\n(i) These lines form continuous closed loops.<br \/>\n(ii) The tangent to the field line gives direction of the field at that point.<br \/>\n(iii) Larger the density of the lines, stronger will be the magnetic field.<br \/>\n(iv) These lines do not intersect one another.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175309\" src=\"https:\/\/i1.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-3.png?resize=206%2C266&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Notes Chapter 5 Img 3\" width=\"206\" height=\"266\" data-recalc-dims=\"1\" \/><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175310\" src=\"https:\/\/i1.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-4.png?resize=700%2C302&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Notes Chapter 5 Img 4\" width=\"700\" height=\"302\" srcset=\"https:\/\/i1.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-4.png?w=700&amp;ssl=1 700w, https:\/\/i1.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-4.png?resize=300%2C129&amp;ssl=1 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" data-recalc-dims=\"1\" \/><\/p>\n<p><strong>Chapter 5 Physics Class 12 Notes<\/strong><\/p>\n<p><strong>NOTE:<\/strong> The direction of magnetic field between the poles of the dipole is in the direction opposite to the magnetic moment (South to North) while inside the current loop it is in the same direction to that of magnetic moment.<br \/>\n<strong>5. Torque<\/strong> on a bar magnet in a uniform magnetic field is<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175311\" src=\"https:\/\/i1.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-5.png?resize=180%2C28&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Notes Chapter 5 Img 5\" width=\"180\" height=\"28\" data-recalc-dims=\"1\" \/><br \/>\nwhere, \u03b8 is the angle between M and B. Its SI unit is joule per tesla (JT<sup>-1<\/sup>).<br \/>\n<strong>6. Potential energy<\/strong> of a magnetic dipole in a magnetic field is given by<br \/>\nU = &#8211; MB cos \u03b8 = &#8211; M . B where, \u03b8 is the angle between M and B.<br \/>\n<strong>7. Work done<\/strong> in rotating the dipole in a uniform magnetic field from \u03b8<sub>1<\/sub> to \u03b8<sub>2<\/sub> is given by<br \/>\nW = MB (cos \u03b8<sub>1<\/sub> &#8211; cos \u03b8<sub>2<\/sub>)<br \/>\n<strong>8. Current loop<\/strong> behaves like a magnetic dipole whose dipole moment is given by<br \/>\nM=IA<br \/>\nThe direction of dipole moment can be obtained by right hand thumb rule. Its. SI unit is A-m<sup>2<\/sup>.<\/p>\n<p><strong>Magnetism And Matter Notes Chapter 5 Class 12<\/strong><\/p>\n<p><strong>9. Magnetic dipole<\/strong> moment of a revolving electron is given by<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175312\" src=\"https:\/\/i1.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-6.png?resize=193%2C45&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Notes Chapter 5 Img 6\" width=\"193\" height=\"45\" data-recalc-dims=\"1\" \/><br \/>\nwhere, v is speed of electron on a circular path of radius r.<br \/>\nL is angular momentum and given as L &#8211; mvr.<br \/>\n<strong>10. Interaction<\/strong> between two magnetic dipoles is<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175313\" src=\"https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-7.png?resize=157%2C54&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Notes Chapter 5 Img 7\" width=\"157\" height=\"54\" data-recalc-dims=\"1\" \/><br \/>\n<strong>11. Oscillation of a Freely Suspended Magnet<\/strong> The oscillations of a freely suspended magnet (magnetic dipole) in a uniform magnetic field are SHM.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175314\" src=\"https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-8.png?resize=354%2C47&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Notes Chapter 5 Img 8\" width=\"354\" height=\"47\" srcset=\"https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-8.png?w=354&amp;ssl=1 354w, https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-8.png?resize=300%2C40&amp;ssl=1 300w\" sizes=\"(max-width: 354px) 100vw, 354px\" data-recalc-dims=\"1\" \/><br \/>\nwhere, I = moment of inertia of the magnet, M = magnetic moment and B = magnetic field intensity.<\/p>\n<p><strong>Magnetism And Matter Chapter 5 Class 12<\/strong><\/p>\n<p><strong>12. Bar Magnet as an Equivalent Solenoid<\/strong> The expression of magnetic field at distance r from centre is given by<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175315\" src=\"https:\/\/i1.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-9.png?resize=109%2C58&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Notes Chapter 5 Img 9\" width=\"109\" height=\"58\" data-recalc-dims=\"1\" \/><br \/>\nThis expression is equivalent to that of bar magnet.<br \/>\n<strong>13. The Electrostatic Analog<\/strong><br \/>\nThe table given below summarises the analogy between electric and magnetic dipoles<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175316\" src=\"https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-10.png?resize=681%2C202&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Note\" width=\"681\" height=\"202\" srcset=\"https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-10.png?w=681&amp;ssl=1 681w, https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-10.png?resize=300%2C89&amp;ssl=1 300w\" sizes=\"(max-width: 681px) 100vw, 681px\" data-recalc-dims=\"1\" \/><\/p>\n<p><strong>Magnetism And Matter Class 12 Chapter 5<\/strong><\/p>\n<p><strong>14. Magnetism and Gauss\u2019 Law<\/strong><br \/>\nThe net magnetic flux (\u0424<sub>B<\/sub>) through any closed surface is always zero.<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-175317\" src=\"https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-11.png?resize=369%2C134&#038;ssl=1\" alt=\"Magnetism And Matter Class 12 Notes Chapter 5 Img 11\" width=\"369\" height=\"134\" srcset=\"https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-11.png?w=369&amp;ssl=1 369w, https:\/\/i2.wp.com\/www.cbselabs.com\/wp-content\/uploads\/2022\/05\/Magnetism-And-Matter-Class-12-Notes-Chapter-5-Img-11.png?resize=300%2C109&amp;ssl=1 300w\" sizes=\"(max-width: 369px) 100vw, 369px\" data-recalc-dims=\"1\" \/><\/p>\n<h4><a title=\"CBSE Notes\" href=\"https:\/\/www.cbselabs.com\/cbse-notes\/\">CBSE Notes<\/a><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Class 12 Physics Notes students can refer to the Magnetism And Matter Class 12 Notes Chapter 5 https:\/\/www.cbselabs.com\/magnetism-matter-cbse-notes-class-12-physics\/ Pdf here. They can also access the CBSE Class 12 Magnetism And Matter Chapter 5 Notes while gearing up for their Board exams. Magnetism And Matter Class 12 Notes Chapter 5 Magnetism And Matter Class 12 Notes &hellip;<\/p>\n","protected":false},"author":29,"featured_media":164556,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[2],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v17.2 (Yoast SEO v17.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Magnetism And Matter Class 12 Notes Chapter 5 - CBSE Labs<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cbselabs.com\/magnetism-matter-cbse-notes-class-12-physics\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Magnetism And Matter Class 12 Notes Chapter 5\" \/>\n<meta property=\"og:description\" content=\"Class 12 Physics Notes students can refer to the Magnetism And Matter Class 12 Notes Chapter 5 https:\/\/www.cbselabs.com\/magnetism-matter-cbse-notes-class-12-physics\/ Pdf here. 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They can also access the CBSE Class 12 Magnetism And Matter Chapter 5 Notes while gearing up for their Board exams. 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