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A thin semi-circular conducting ring of ...

A thin semi-circular conducting ring of radius R is falling with its plane verticle in horizontal magnetic induction `(vec B)`. At the position MNQ the speed of the ring is v, and the potential difference developed across the ring is

A

Zero

B

`(BpiR^2)/2` and M is at a higher potential

C

`piBRv and Q` is at a higher potential

D

2RBv and Q is at a higher potential

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The correct Answer is:
D
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