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Two charge q and –3q are placed fixed on...

Two charge q and `–3q` are placed fixed on x–axis separated by distance d. Where should a third charge` 2q` be placed such that it will not experience any force ?

A

`(d-sqrt3d)/(2)`

B

`(d+sqrt3d)/(2)`

C

`(d+3d)/(2)`

D

`(d-3d)/(2)`

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