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A conducting ring of radius 2R rolls on ...

A conducting ring of radius 2R rolls on a smooth horizontal conducting surface as shown in figure-5.295. A uniform horizontal magnetic field B is perpendicular to the plane of the ring. The potential of A with respect to O is:

A

2 BvR

B

`(1)/(2)BvR`

C

8BvR

D

4BvR

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The correct Answer is:
D
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