# An galvanometer is used in the laboratory for detecting the null point in the electrical experiments. If on passing a current of 5 mA it produces a deflection of 2o, its figure of merit is close to:- Option: 1 Option: 2 Option: 3 Option: 4

Correct Answer: c) $3\times 10^{-3} A/div$

\begin{array}{l} \text { figure of merit} \\ \qquad \begin{aligned} G &=\frac{K}{N B A}=\frac{I}{\theta} \\ \Rightarrow G &=\frac{6 \times 10^{-3}}{2}= 3 \times 10^{-3} \mathrm{Am}^{2} \end{aligned} \end{array}

or,

$3 \times 10^{-3} \mathrm{A/div}$

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