Question

A galvanometer has a coil of resistance 100 ohm and gives a full scale deflection for 30 volt current

Answer 1

Answer :- A galvanometer has a coil of resistance 100 ohm and gives a full scale deflection for 30 volt curren

Answer 2

Here,

Resistance of galvanometer, G = 100 Q

Current for full scale deflection. lg = 30 m A

= 30 x 10-3 A

Range of voltmeter, V = 30 V

To convert the galvanometer into an voltmeter of a given range, a resistance R is connected in series with it as shown in the figure.