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An e.m.f is produced in a coil, which is...

An e.m.f is produced in a coil, which is not connected to an external voltage source. This can be due to

A

the coil being in a time varying magnetic field.

B

the coil moving in a time varying magnetic field.

C

the coil moving in a constant magnetic field.

D

the coil is stationary in external spatially varying magnetic field, which does not change with time.

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
Induced emf is produced in a coil if the magnetic flux linked with the coil changes i.e. option (A), (B) and option (C) is correct, if the coil is rotating in constant magnetic field then also emf induces
When loop is placed in separately varying magnetic field but not varying with time, then flux linked with coil does not get change hence, emf is not induced. So, (D) is incorrect.
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