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Three charged particles having charge q each are suspended by means of thread from a common point. In equilibrium triangle of side l. The electrostatic force on one of the charges is

A

`(2 sqrt(3) q^2)/(4 pi epsilon_0 l^2)`

B

`(2 q^2)/(4 pi epsilon_0 l^2)`

C

`(q^2)/(8 pi epsilon_0 l^2)`

D

`(sqrt(3) q^2)/(4 pi epsilon_0 l^2)`

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