APFIVE Change in Electric Potential Energy
Two point charges, $$q_1 = +3.0\,\mu\mathrm{C}$$ and $$q_2 = -2.0\,\mu\mathrm{C}$$, are initially separated by a distance of $$0.50\,\text{m}$$. If both charges are moved so that their final separation is $$0.25\,\text{m}$$, what is the change in the electric potential energy of the system?
A
-0.108 J
B
+0.108 J
C
-0.054 J
D
0.026 J
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