Electromagnetic Induction

Magnetic flux linked with a surface:

• It is ​the number of magnetic lines of force crossing a surface.

• Flux linked with a surface of area A placed in a magnetic field B, .

• SI unit of flux is Weber.

​Faraday's Laws

• First Law − Whenever the amount of magnetic flux linked with a circuit changes, an emf is induced in the circuit. The induced emf lasts as long as the change in magnetic flux continues.

• Second Law − The magnitude of emf induced in a ci…