Question

A galvanometer has a coil of resistance 100 ohm and gives a full scale deflection for 30 ma current. If it is to work as a voltmeter of 30 volt range, the resistance required to be added will be

Answer 1

R = V/ig - G

= 30/0.03 - 100 = 1000 - 100 = 900 ohm

Answer 2

Answer:

R=v/ig -G

Explanation:

Ans= 30/.03 -100

1000 -100

= 900