The resistance of the shunt '*' and resistance 'G' of the galvanometer should have the following relation.

Question

A galvanometer measures current which passes through it. A galvanometer can measure typically current of order of mA. To be able to measure currents of the order of amperes of main current, a shunt resistance '*' is connected in parallel with the galvanometer.

The resistance of the shunt '*' and resistance 'G' of the galvanometer should have the following relation.

(A) * = G

(B) * >> G

(C) * << G

(D) * < G

Answer 1

*Correct option: (C) << G**

Explanation:

The current through the galvanometer is ~ 1 /1000 of total current, the * << G.

~ 1 / 1000 ∴ * << G.