When a resistance of $200 \Omega$ is connected in series with a galvanometer of resistance 'G' its range is ' $\mathrm{V}^{\prime}$. To triple its range, a resistance of $2000 \Omega$ is connected in series. The value of $\mathrm{G}$ is

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Aicharya · Accepted Answer

$V_{1}=\left(R_{1}+Gight) I$ $V_{2}=\left(R_{2}+Gight) I$ $\frac{V_{2}}{V_{1}}=\frac{R_{2}+G}{R_{1}+G}$ $3=\frac{2000+G}{200+G}$ $	herefore 600+3 G=2000+G$ $2 G=1400$ $G=700 \Omega$

When a resistance of $200 \Omega$ is connected in series with a galvanometer of resistance 'G' its range is…

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