Three identical point charges, q, are placed at the vertices of an equilateral triangle as shown in the figure. The length of each side of the triangle is d. Determine the magnitude and direction of the total electrostatic force on the charge at the top of the triangle.

Options

A. `(Q^(2)sqrt(3))/(4pi epsilon_(0) d^(2))`, directed upward
B. `(Q^(2)sqrt(3))/(4pi epsilon_(0) d^(2))`, directed downward
C. `(Q^(2)sqrt(3))/(2pi epsilon_(0) d^(2))`, directed upward
D. `(Q^(2)sqrt(3))/(2pi epsilon_(0) d^(2))`, directed downward

Answer

A