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A copper disc of radius 0.1 m rotates ab...

A copper disc of radius 0.1 m rotates about its centre with 10 revolution per second in 'a uniform magnetic field of 0.1 T. The emf induced across the radius of the disc is -

A

`2pixx10^-2V

B

`pixx10^-2V`

C

`pi/2xx10^-2V`

D

None of these

Text Solution

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The correct Answer is:
B
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