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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^(2)`

C

`N^(2) ABI`

D

`NABI`

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