A ring of radius \( r \) carries a charge \( \mathrm{Q} \) uniformly distributed over its length.... VIDEO
A ring of radius \( r \) carries a charge \( \mathrm{Q} \) uniformly distributed over its length. A charge \( q \) is placed at
\( \mathrm{P} \)
its centre will experience a force equal to
(A) \( \frac{q Q}{4 \pi \varepsilon_{0} r^{2}} \)
(B) \( \frac{q Q}{8 \pi \varepsilon_{0} r^{3}} \)
(C) Zero
(D) None of these
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