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A circular ring carries a uniformly dist...

A circular ring carries a uniformly distributed positive charge .The electric field(E) and potential (V) varies with distance (r ) from the centre of thr ring along its axis as

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
`E=(KQr)/((R^(2)+r^(2))^(3//2))`
It is maximum at `r=pmR/sqrt(2)` and also E is not a linear function of `r`.
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