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The adjacent diagram shows a charge +Q h...

The adjacent diagram shows a charge `+Q` held on an insulating support `S` and enclosed by a hollow spherical conductor,`O` represent the center of the spherical conductors and `P` is a point such that `OP=x` and `SP=r` .The electric field at point `P` will be

A

`Q/(4pi epsilon_0 x^2)`

B

`Q/(4pi epsilon_0 r^2)`

C

0

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
A
According to gauss’s law
`ointvecE.dvecs=(Q_("in""))/(epsilon_0)`
`impliesE xx 4pix^2 =Q/(epsilon_0)`
`implies E=Q/(4pi epsilon_0x^2)`
Take a Gaussian surface radius R = x.
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