A nonconducting ring of radius \( R \) has uniformly distributed po...

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A nonconducting ring of radius \( R \) has uniformly distributed positive charge \( Q \). A small part of the ring, of length \( \mathrm{d} \), is removed \( (dR) \). The electric field at the centre of the ring will now be
\( \mathrm{P} \)
(A) directed towards the gap, inversely proportional to \( R^{3} \).
\( \mathrm{W} \)
(B) directed towards the gap, inversely proportional to \( R^{2} \).
(C) directed away from the gap, inversely proportional to \( R^{3} \).
(D) directed away from the gap, inversely proportional to \( R^{2} \).
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