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The coil of a moving coil galvanometer h...

The coil of a moving coil galvanometer has an effective area of `5xx10^(-2)m^(2)`. It is suspended in a magnetic field of `2xx10^(-2)` `Wbm^(-2)`.If the torsional constant of the senpension fibre is `4xx10^(-9)``"Nmdeg"^(-1)`. Then find its current sensitivity in degree per microampere

A

0.25

B

25

C

50

D

2.5

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The correct Answer is:
A
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