Magnetism & Matter Class 12 | NCERT Chapter 5 |CBS

Timestamps: 0:00 Introduction 0:42 Story of Magnetism 2:21 Magnetism & Matter 2:45 Story of Magnetism 4:39 Magnetism & Matter 5:28 Bar magnet 6:39 Properties of bar magnet 11:03 Magnetic field lines 11:56 Magnetic field: Visual Realization 13:18 Magnetic field lines vs. Electric field lines 14:21 Magnetic field lines: Properties 17:32 A Current loop as a Magnetic dipole 22:32 Bar magnet as a Solenoid 28:50 Dipole in uniform Magnetic field 43:15 Dipole analogy of Electrostatics vs magnetism 46:14 Gauss’ law of Magnetism 50:45 Problem 1 52:14 Problem 2 56:13 Earth’s Magnetism 57:42 Dynamo theory 59:24 Magnetic North & South poles 01:03:14 Magnetic Elements of Earth 01:03:58 Magnetic Declination 01:06:53 Magnetic Dip 01:10:11 Horizontal component 01:15:13 The story at the Poles 01:18:32 Problem 1 01:21:25 Problem 2 01:28:37 Magnetic properties of materials 01:29:10 Magnetization 01:30:55 Magnetic Intensity 01:35:26 Magnetic Susceptibility 01:38:03 Magnetic Susceptibility & Permeability 01:43:25 Classification of materials 01:44:48 Diamagnetic substances 01:49:02 Paramagnetic substances 01:52:20 Electron Theory of Paramagnetism 01:54:33 Curie’s law of Magnetism 01:57:03 Ferromagnetic substances 02:01:47 Electron Theory of Ferromagnetism 02:07:00 Para magnetism vs. Ferromagnetism 02:08:00 Curie temperature 02:08:55 Hard and Soft Ferromagnets 02:10:34 Examples 02:12:04 Hysteresis 02:14:02 Hysteresis Loop 02:22:09 Hysteriesis loops: Soft Iron vs. Steel 02:22:54 Permanent Magnets