Two point charges are held apart

PHYSICS · Single correct · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance

Problem

Two point charges are held

0.50\,\text{m}

apart. The first charge is

q_1 = +8.0\,\mu\text{C}

. What value of the second charge

q_2

will give the system an electric potential energy of

+0.72\,\text{J}

? (a)

+0.050\,\mu\text{C}

(b)

+5.0\,\mu\text{C}

(c)

-5.0\,\mu\text{C}

(d)

+2.5\,\mu\text{C}