alleryStart learning →Two 1 microcoulomb point charges lie 10 cm apart in vacuum. The force between them is about
A0.9 N
B90 N
C0.09 N
D9 N
Answer & Solution
Correct answer: A. 0.9 N
F = 9 x 10^9 x 10^-6 x 10^-6 / (0.1)^2 = 9 x 10^-3 / 0.01 = 0.9 N.
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