A) \[I\propto \tan \text{o }\!\!|\!\!\text{ }\]
B) \[I\propto \text{o }\!\!|\!\!\text{ }\]
C) \[I\propto \text{o}{{\text{ }\!\!|\!\!\text{ }}^{2}}\]
D) \[I\propto 1/\text{o }\!\!|\!\!\text{ }\]
Correct Answer: B
Solution :
Current flowing in moving coil galvanometer is given by \[I=\frac{C}{BAN}\text{o }\!\!|\!\!\text{ }\] where C is deflecting couple, B is magnetic field, A is area of the coil, N is number of turns and \[\text{o }\!\!|\!\!\text{ }\]is the angle through which coil rotates. Hence, \[\text{ }\!\!|\!\!\text{ I}\propto \text{o}|\]
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