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When two spheres having 4Q and - 2Q char...

When two spheres having 4Q and - 2Q charge are placed at a certain distance, the force acting between them is F. Now they are connected by a conducing wire and again separated from each other. Now they are kept at a distance half of the previous one. The force acting between them is.......

A

F

B

F/4

C

F/2

D

F/8

Text Solution

Verified by Experts

The correct Answer is:
C
`F= (K (4Q)(2Q))/(r^2) = (8KQ^2)/(r^2)`
`F. =(K(Q)(Q))/(((r)/(2))^2) = (4KQ^2)/(r^2)`
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