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Q.

A thin metal ring of radius R is given a charge q which is uniformly distributed over its perimeter. The electric potential at the centre of the ring is (k=1/4πεo)

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a

zero

b

kq/2R

c

kq/R

d

2kq/R

answer is C.

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A thin metal ring of radius R is given a charge q which is uniformly distributed over its perimeter. The electric potential at the centre of the ring is (k=1/4πεo)