Physics · 2020
JEE Main · 5 September 2020, Shift 1 · Q14
A galvanometer of resistance G is converted into a voltmeter of range 0-1 V by connecting a resistance R_1 in series with it. The additional…
A galvanometer of resistance $\displaystyle G$ is converted into a voltmeter of range $\displaystyle 0-1 \mathrm{~V}$ by connecting a resistance $\displaystyle \mathrm{R}_1$ in series with it. The additional resistance that should be connected in series with $\displaystyle \mathrm{R}_1$ to increase the range of the voltmeter to $\displaystyle 0-2 \mathrm{~V}$ will be :
Official answer
(4)
$\displaystyle R_1+G$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.