Physics

Problem

Three point charges

q_1 = 2.0\,\mu\text{C}

q_2 = -1.0\,\mu\text{C}

and

q_3 = 3.0\,\mu\text{C}

are placed at the corners of an equilateral triangle of side

0.20\,\text{m}

. Calculate the total electrostatic potential energy of the system.