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Two point charges A and B, having charge...

Two point charges A and B, having charges +Q and -Q respectively, are placed at certain distance apart and force acting between them is F, if `25%` charge of A is transferred to B, then force between the charges becomes:

A

`(4F)/3`

B

F

C

`(9F)/16`

D

`(16F)/9`

Text Solution

Verified by Experts

The correct Answer is:
C
`Delta_1=Q-Q/4, Q_2 =-Q+Q/4`
`F_1=(kQ^2)/r^2 ,F_2 =(k(3/4Q)(3/4Q))/r^2`
`F_2/F_1 =9/16`
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