alleryStart learning →Charges of 2 µC and 3 µC lie 30 cm apart in air. What force acts between them?
A0.2 N
B0.6 N
C1.8 N
D6 N
Answer & Solution
Correct answer: B. 0.6 N
F = 9 × 10^9 × (2 × 10^-6)(3 × 10^-6)/(0.3)^2 = 0.054/0.09 = 0.6 N.
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