(a) Briefly explain how a galvanometer is converted into a voltmeter.
Channel: Doubtnut
Date: 2020-01-03

(a) Briefly explain how a galvanometer is converted into a voltmeter. (b) A voltmeter of a certain range is constructed by connecting a resistance of 90 `Omega` in series with a galvanometer. When the resistance of `470 Omega` is connected in series, the range gets halved. Find the resistance of the galvanometer.