A multirange voltmeter can be constructed by using a galvanometer circuit as shown in figure.
Channel: Doubtnut
Date: 2020-08-02

A multirange voltmeter can be constructed by using a galvanometer circuit as shown in figure. We want to construct a voltmeter that can measure 2V, 20V and 200V using a galvanometer of resistance `10Omega` and that produces maximum deflection for current of `1mA`. Find `R_1`, `R_2` and `R_3` that have to be used. img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PR_XII_V01_C03_S01_707_Q01.png" width="80%"