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Two spherical conductors B and C having ...

Two spherical conductors B and C having equal radii and cayying equal charges on them repel each other with a force F when kept apart at some distance. A third spherical conductor having same radius as that B but uncharged is brought in contact with B, then brought in contact with C and finally removed away from both. The new force of repulsion between B and C is

A

`F/4`

B

`(3F)/4`

C

`F/8`

D

`(3F)/8`

Text Solution

Verified by Experts

The correct Answer is:
D
Let charges on B & C be Q then final charges on B and C will be `Q/2` and `(3Q)/(4)` respectively.
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ALLEN -MISCELLANEOUS-Exercise-05(A)
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