(i) When coil P is moved towards Q, current will be included 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.
(ii) lf P is moved away from Q, the field associated with Q will decrease and a current will be induced but in the opposite direction.
(iii) Current can be induced in a coil by (a) moving a magnet towards or away from the coil (b) moving a coil towards or away from a magnet (c) rotating a coil within a magnetic field.