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A coil of area A, turns N and carrying c...

A coil of area `A`, turns `N` and carrying current `i` is placed with its face parallelt to the lines of magnetic induction `B`. The work done in rotating the coil through an angle of `180^(@)` is

A

`Inav`

B

`2INAB`

C

`INAB//2`

D

zero

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