A galvanometer of resistance G can be converted into a voltmeter of range `theta-V` volts by connecting a resistance R in series with it. How much resistance will be required to change its range from 0 to `V//2`?

A galvanometer of resistance G is converted into a voltmeter to measure upto V volts by connecting a resistance R_1 in series with the coil. If a resistance R_2 s connected in series with it then it can measure upto V/2 volts Find the resistance R, in terms of R_1 and R_2 required to convert it into a voltmeter that can read upto 2V volts.

A galvanmeter of resistance G is converted into a voltmeter of range 0 -1V by connecting resistance R_1 in series with it. The additional resistance that should be connected in series with R_1 to increase the range of the voltmeter to 0-2 V will be :

A galvanmeter of resistance G is converted into a voltmeter of range 0 -1V by connecting resistance R_1 in series with it. The additional resistance that should be connected in series with R_1 to increase the range of the voltmeter to 0-2 V will be :