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A moving coil galvanometer has N numbr o...

A moving coil galvanometer has `N` numbr of turns in a coil of effective area `A`, it carries a current `I`. The magnetic field `B` is radial. The torque acting on the coil is

A

`NA^(2)B^(2)I`

B

`NABI^92)`

C

`N^(2)ABI`

D

NABI

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The correct Answer is:
4
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