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Q.

A circle has radius r. A charge +q is kept at the centre. P is a point on the circle. The electric potential at P is found to be +V. At a diametrically opposite point to P, the electric potential will be

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a

+ V/2

b

− V/2

c

− V

d

+V

answer is D.

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Detailed Solution

V​​​​ = (1/4πεo)(q/r) here r is same for any point on the circumference.

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