Question

What is Faraday’s law of electromagnetic induction? Write its expression. 

(OR) 

State the Faraday’s law of electromagnetic induction. Write the equation of this law

Answer 1

1. The induced EMF generated in a closed loop is equal to the rate of change of magnetic flux passing through it. Induced EMF = Change in flux / time ε = ∆Φ / ∆t

2. Let Φ₀ be flux linked with single turn. If there are N turns of the coil, the flux linked with the coil is NΦ₀ . 

∴ ε = NAΦ₀ / ∆t