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A charge Q is divided into two parts and...

A charge Q is divided into two parts and then they are placed at a fixed distance. The force between charges is always maximum when the charges are ………………

A

`(Q)/(3),(Q)/(3)`

B

`(Q)/(2),(Q)/(2)`

C

`(Q)/(4),(3Q)/(4)`

D

`(Q)/(5),(4Q)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
B
`F=(1)/(4piepsilon_(0))(q(Q-q))/(r^(2)), (delF)/(delq)=Q-2q=0,2q=Q,q=(Q)/(2)`
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