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A conducting spherical shell is earthed....

A conducting spherical shell is earthed. A positive charge `+q_1` is placed at the center and another small positive charge `+q_2` is placed at a distance r from `q_1`. Ignore the effect of induced charge due to `q_2` on the sphere. Then the coulomb force on `q_2` is

A

zero

B

`(q_1q_2)/(4piepsilon_0r^2)`

C

`(q_1q_2)/(4piepsilon_0(r-R)^2)`

D

`(q_1q_2)/(4piepsilon_0(r^2-R^2))`

Text Solution

Verified by Experts

The correct Answer is:
A

There is not charge on the outer surface. Hence, no force on `q_(2)`
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