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Point Charge Configuration: Electric Force: Equilibrium

APPH12-T9NV17

A charge of +2nC and a second charge of +8nC are separated by a distance of 1 meter. A third charge of -4nC is to be placed somewhere directly between the first two charges, at an equilibrium position that would lead to zero net electric force on the third charge.

How far from the +2nC charge is this equilibrium position located?

A

20 cm

B

25 cm

C

33 cm

D

67 cm