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Three charge q , Q and -4q are placed in...

Three charge `q , Q` and `-4q` are placed in a straight line , line of length `L`at points distant `0 ,L//2` and `L` respectively from one end. In order to make the net force on `q` zero, the charge `Q` must be equal to

A

`-q`

B

`-2q`

C

`-q//2`

D

`4q`

Text Solution

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The correct Answer is:
A
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