Question

A galvanometer of resistance 100 Ω has 50 divisions on its scale and has sensitivitv of 20 Ω A/division. It is to be converted to a voltmeter with three ranges of 0-2V, 0-10 V and 0-20 V. The appropriate circuit to do so is

Answer 1

Correct option (1)

Explanation:

sensitivity = 20 μA/div

Total division = 50

maximum current through galvanometer can be = I_max = (50) (20 μA) = 10^–3 A