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A solid sphere of radius R is charged uniformly throughout the volume. At what distance from its surface

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A solid sphere of radius R is charged uniformly throughout the volume. At what distance from its surface is the electric potential 1/4 of the potential at the centre?

(a) 8R/3

(b) R/3

(c) 5R/3

(d) 2R/3

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1 Answer

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Best answer

Correct option (c) 5R/3

Explanation:

distance from the surface 

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