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A charged spherical conductor of radius ...

A charged spherical conductor of radius R carries a charge + Q. A point test charge `+ q_0` is placed at a distance x from the surface of the sphere. The force experienced by the test change will be proportional to

A

`X^2`

B

`(R + X)^2`

C

`frac(1)((R - X )^2)`

D

`frac(1)((R + X)^2)`

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