Electromagnetic Induction Class 12 Notes Physics Chapter 6

Chapter at a Glance

1. Faraday’s law of electromagnetic induction: Whenever there is change in magnetic flux linked with circuit, there induces an emf in the circuit. The rate of change of magnetic flux is equal to the induced emf. Thus

2. Magnetic flux : Magnetic flux of the magnetic field B through the normal area A is

3. Motional emf: When a metallic conductor moves in a magnetic field B with velocity v, an emf induces across its ends. The induced emf

4. When a metallic conductor is rotated in normal magnetic field about its one ends, the induced emf across the ends

5. Lenz’s law is a consequence of the law of conservation of energy.
6.Induced emf in a coil rotating in uniform magnetic field

9. Combination of inductors:

11. Mutual Inductance : Induced emf in the second coil due to change in current in first coil

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