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What is the potential energy of the two equal positive point charges of 1 μC each held 1 m apart in air?

a
9 x 10-3 J
b
9 x 10-3 eV
c
2 eV/m
d
Zero

detailed solution

Correct option is A

By using U=9×109Q1Q2r ⇒U=9×109×10-6×10-61=9×10-3 J

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