Question 168: Current Electricity

Question

A current of $$200 \mu \mathrm{A}$$ deflects the coil of a moving coil galvanometer through $$60^{\circ}$$. The current to cause deflection through $$\frac{\pi}{10}$$ radian is :

Accepted Answer

$$\mathrm{i} \propto 	heta$$ (angle of deflection)
$$\begin{aligned}
& 	herefore \frac{\mathrm{i}_2}{\mathrm{i}_1}=\frac{	heta_2}{	heta_1} \Rightarrow \frac{\mathrm{i}_2}{200 \mu \mathrm{A}}=\frac{\pi / 10}{\pi / 3}=\frac{3}{10} \
& \Rightarrow \mathrm{i}_2=60 \mu \mathrm{A}
\end{aligned}$$

Answer

120 $$\mu$$A

Answer

180 $$\mu$$A

Answer

30 $$\mu$$A

Answer

60 $$\mu$$A

Current Electricity

A current of $200 \mu \mathrm{A} deflects the coil of a moving coil galvanometer through 60^{\circ}. The current to cause deflection through \frac{\pi}{10}$ radian is :

Choose the correct answer: