Answer:
(a)
When coil P is moved towards Q, current will be induced in coil Q. This is
because on moving P the magnetic field associated with Q increases and so a
current is induced. The phenomenon is electromagnetic induction.
(b) If P is moved away from Q, the field associated with Q will decrease
and a current will be induced but in the opposite direction
(1)
(c) Current can be induced in a coil by moving a magnet
towards or away from the coil.
(i) moving a coil towards or away from a magnet.
(iii) rotating a coil within a magnetic field. (1)
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