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A ring with a uniform charge Q and radiu...

A ring with a uniform charge `Q` and radius `R`, is placed in the `yz` plane with its centre at the origin

A

the field at the origin is zero

B

The potential at the origin is `k Q/R`.

C

The field at the point `(x,0,0)` is `k Q/(x^(2))`

D

The field at the point `(x,0,0)` is `k Q/(R^(2)+x^(2))`

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The correct Answer is:
A, C
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