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Two point metal charges-q and +2q are pl...

Two point metal charges`-q` and `+2q` are placed at a certain distance apart.Where should a third point charge be placed so that it is in equilibrium?

A

on the line joining the two charges on the right of `+2q`

B

on the line joining the two charge on the left of `-q`

C

between `-q` and `+2q`

D

at any point on the right bisector of the 1 line joining `-q` and `+2q`

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