A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 volt. The potential at the centre of the sphere is
(IIT-JEE 1983)

zero

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10 volt

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same as at a point 5 cm away from the surface

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same as at a point 25 cm away from the surface

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Solution

The correct option is B 10 volt
As the spherical shell is an equipotential region, which implies that the potential anywhere inside it will be equal to the potential at its surface.

= 10 volts.

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