(A) : For a non-uniformly charged thin circular ring with net charge zero, the electric field at any point on axis of the ring is non zero.
(R) : For a non-uniformly charged thin circular ring with net charge zero, the electric potential at each point on axis of the ring is zero.

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Both ‘A’ and ‘R’ are true and ‘R’ is the correct explanation of ‘A’.

‘A’ is false and ‘R’ is false

Both ‘A’ and ‘R’ are true and ‘R’ is not the correct explanation of ‘A’

‘A’ is true and ‘R’ is false

answer is B.

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Detailed Solution

Electric field is a vector quantity and the field is the resultant effect due to all charges. Thus it has some non zero component on the axis of the ring.

The potential is a scalar quantity and it is equal to $\frac{k q_{n e t}}{r} = 0$ as the net charge is zero.

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