electric potential.....

A solid sphere of radius R is charged uniformly.At what distance from its surface is the electrostatic potential half of the potential at the centre?

1) R

2)R2

3)R3

4) 2R

I know the final answer.But how to solve this one?

4 Answers

anyone?????

Potential at the center is KQ/r

Also the potential at a distance x is Kq/x

so kq/x=kq/r * 1/2

so 1/x=1/(2r)

so x= 2r

Hello Nishant!

I'm sorry but that is not the correct answer.The answer given is

c)R3

Can u check it out????

Hey everyone!

I have found the answer.

Thread closed.

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