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Radius ol a circular luop placed in a pe...

Radius ol a circular luop placed in a perpendicular uniform magnetic field is increasing at a constant rate of `r_(o)ms^(1)`. If at any instant radius of the loop is r, then emf induced in the loop at that instant will be

A

`-2brr_(0)`

B

`-2 Bpir`

C

`- Bpir_(0)r`

D

`-2 Bpir_(0)r`

Text Solution

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The correct Answer is:
D
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