PhysicsElectrostaticsJAMB
Two charges of 2 μC each are 0.3 m apart. Find the force between them. (k = 9 × 10⁹ N m²/C²)
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Answer: D. 0.4 N
F = kq₁q₂/r² = 9 × 10⁹ × (2 × 10⁻⁶)² ÷ 0.09 = 0.036 ÷ 0.09 = 0.4 N.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.