APFIVE Electric Potential Energy of Point Charges
Two point charges, $$q_1 = 3.0\ \mu\text{C}$$ and $$q_2 = -2.0\ \mu\text{C}$$, are initially separated by an infinite distance. If an external force brings them to positions where they are $$0.5\ \text{m}$$ apart, what is the electric potential energy of the system?
A
$$0.108 J$$
B
$$0 J$$
C
$$-0.108 J$$
D
$$-1.08 \times 10^{-4} \ \text{J}$$
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