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A metal plate is getting heated . It can...

A metal plate is getting heated . It can be because

A

a direct current is passing through the plate.

B

it is placed in a timevarying magnetic field.

C

it is placed in a space-varying magnetic field, but does not vary with time. (d) a current (either direct or

D

a current (either direct or alternating) is passing through the plate

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
A direct current passing through a metal plate can cause it to heat due to Joule.s heating. Similarly, time-varying magnetic field can give rise to induced current, again resulting in Joule.s heating. A direct or alternating current passing through the plate causes heating effect. When the metal plate is placed in a space varying magnetic field, current will be induced in it only when the plate moves relative to the magnetic field.
Options (a), (b) and (d) are correct.
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