Physics

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}

+5.0\,\mu\text{C}

-5.0\,\mu\text{C}

+2.5\,\mu\text{C}