Physics

Problem

Five point charges, each of value

+q

, are placed on five vertices of a regular hexagon of side

L

. The magnitude of the force on a point charge of value

-q

coulomb placed at the center of the hexagon is (1)

\frac{1}{\pi\epsilon_0} \left(\frac{q}{L}\right)^2

(2)

\frac{2}{\pi\epsilon_0} \left(\frac{q}{L}\right)^2

(3)

\frac{1}{2\pi\epsilon_0} \left(\frac{q}{L}\right)^2

(4)

\frac{1}{4\pi\epsilon_0} \left(\frac{q}{L}\right)^2