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Three charges are placed at the vertices...

Three charges are placed at the vertices of an equilateral trianlge of side `a` as shown in the following figure. The force experienced by the charge placed at the vertex `A` in a direction normal to `BC` is

A

`Q^2 //(4 pi epsi_(0) a^2)`

B

`-Q^2 //(4 pi epsi_(0) a^2)`

C

Zero

D

`Q^2 //(2 pi epsi_(0) a^2)`

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