Question:
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 time-varying magnetic field.
(c) it is placed in a space varying magnetic field, but does not vary with time.
(d) a current (either direct or alternating) is passing through the plate.
Solution:
(a) a direct current is passing through the plate.
(b) it is placed in a time-varying magnetic field.
(c) it is placed in a space varying magnetic field, but does not vary with time.