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A solid conducting sphere ofradius 5.0 c...

A solid conducting sphere ofradius 5.0 cm has a charge of 0.25nC distributed uniformly on its surface. If point A is located at the centre of the sphere and a point Bis 15cm from the center, what is the magnitude of the electric potential difference between these two points ?

A

23V

B

30V

C

15V

D

45V

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