A teacher in his physics laboratory allotted an experiment to determine the resistance \((G)\) of a galvanometer. Students took the observations for \(\frac{1}{3}\) deflection in the galvanometer. Which of the below is true for measuring value of \(G\) \(?\)

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(B) \(\frac{1}{3}\) deflection method can be used and in this case the \(G\) equals to twice the value of shunt resistance\((s).\)

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\(\Rightarrow\left( I - I _{ g }\right) S = I _{ g } G\)

\(\frac{I_{g}}{I}=\frac{S}{S+G}\)

\(\Rightarrow \frac{1}{3}=\frac{S}{S+G} \Rightarrow S+G=3 S \Rightarrow G=2 S\)

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