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In a uniform magnetic field of induction...

In a uniform magnetic field of induction B, a wire in the form of semicircle of radius r rotates about the diameter of the circle with angular frequency omega. If the total resistance of the circuit is R, the mean power generated per period of rotation is:

A

`(Bpir^(2) omega)/(2 R)`

B

`( Bpir^(2)omega)^(2)/(8 R)`

C

`( Bpir omega)^(2)/(2 R)`

D

`(Bpiromega^(2))^(2)/(8R)`

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