Question

Magnet is moved towards a coil first slowly and then quickly, then the induced emf is:

• A. More in the first case
• B. Independent of the speed of the magnet
• C. Same in both the cases
• D. More in the second case

Answer 1

The correct option is D More in the second case

According to Faraday's Law when the magnetic flux linking a circuit changes, an electromotive force is induced in the circuit proportional to the rate of change of the flux linkage

And the emf induced $\left(E\right)=$ $-\frac{d\varphi }{dt}$

Since the rate of changing of flux will be more in second case induced emf will also be more in second case.

Therefore, D is correct option.