A rod of length \( L \) has a total charge \( Q \) distributed uniformly along its length. It is...

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A rod of length \( L \) has a total charge \( Q \) distributed uniformly along its length. It is bent in the shape of a
\( \mathrm{P} \) semicircle. Find the magnitude of the electric field at

W the centre of curvature of the semicircle.
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