Question

A galvanometel having a coil resistance of 100Ω gives a full scale deflection when a current of 1mA is passed through it. The value of the resistance which can convert this galvanometer into ammeter giving a full scale deflection for a current of 10 A, is

(a) 0.01Ω (b) 2Ω (c) 0.1Ω (d) 3Ω

Answer 1

Correct Option(a) 0.01Ω

Explanation:

Maximum voltage that can be applied across the galvanometer coil = 100Ω x 10^-3 A = 0.1 V.