Question

A coil is connected to a galvanometer. When the N-pole of a magnet is pushed into the coil the galvanometer deflected to the right . What deflection, if any, is observed when :

(a) the N-pole is removed ?

(b) the S-pole is inserted ?

(c) the magnet is at rest in the coil ?

State three ways of increasing the deflection on the galvanometer.

Answer 1

(a) left (when N was pushed it deflected right, so now it will deflect in opposite direction.)
(b) left ( when N was pushed it deflected right, so now when we will insert S it will deflect in opposite direction.)
(c) No deflection because there is no relative motion between the coil and magnet.


(i) By moving the magnets faster
(ii) Increasing the area of coil
(iii) By having more number of turns in the coil.