The charge given to a hollow sphere of radius 10 cm is 3.2×10–19 coulomb. At a distance of 4 cm from its centre, the electric potential will be

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28.8×10−9 volts

288 volts

2.88 volts

Zero

answer is A.

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Detailed Solution

Potential is to be determined at a distance of 4 cm from centre of sphere i.e. inside the sphere. It is same as on the surface.V=14πε0qr

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