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

Options

A. `Q^2//(4pi epsilon_0a^2)`
B. `-Q^2//(4pi epsilon_0a^2)`
C. Zero
D. `Q^2//(2pi epsilon_0a^2)`

Answer

C

Explanation

`F_y = 0`