First slide

Magnetic flux and induced emf

Question

A magnet is brought towards a coil (i) speedly (ii) slowly then the induced e.m.f./induced charge will be respectively

Moderate

A

More in first case / More in first case
B

More in first case/Equal in both case
C

Less in first case/More in second case
D

Less in first case/Equal in both case

Solution

The magnitude of induced e.m.f. is directly proportional to the rate of change of magnetic flux. Induced charge doesn’t depend upon time.

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