Question

Answer parts i) and ii) with reference to the direction of the galvanometer pointer and the reason for the deflection in that particular direction. Correct answer would be marked Brainliest.

Answer 1

i) (a) When a
bar magnet is pushed into the coil of insulated copper wire connected to a galvanometer,
an induced current is set-up in the coil due to change of magnetic field through it. As
a result, galvanometer gives a deflection (say towards left).

(b)  When the bar
magnet is withdrawn from inside the coil, again an induced current is set­up in the
coil due to change of magnetic field through it. As a result galvanometer gives
a deflection in the reverse direction. (say towards right).

(c)  If the bar magnet is held
stationary inside the coil, then there is no induced current in the coil,
because there is no change in magnetic field through it. As a result,
galvanometer does not show any deflection.                                                                                                

(ii) By changing current in another coil placed near it.
MARK ME AS BRAINLIST, as it is a wrong answer also