Three charges `+q,+q and -q` are located at the corners of an equilaterial triangle of side a. Calculate potential energy of the system.

Three charges each 20muC are placed at the corners of an equilateral triangle of side 0.4m The potential energy of the system is

Three point charges each equal to q are placed on the vertices of an equilateral triangle of side l. The potential energy of the system is

Three charges 2q, -q, and -q are located at the vertices of an equilateral triangle. At the center of the triangle,

Three charges 2q, -q, and -q are located at the vertices of an equilateral triangle. At the center of the triangle,

The charges Q, +q and + q are placed at the vertices of an equilateral triangle of side l . If the net electrostatic potential energy of the system is zero , the Q is equal to

Three charges -q, +q and -q are placed along a st. line at equal distance , say a. Calculated the potential energy of this system of charges (i) when +q charge is in the middle and (ii) when this charge is at one end.