PhysicsElectrostaticsWAEC
Two point charges of 2 × 10⁻⁶ C each are 0.3 m apart in air. Find the force between them. [k = 9 × 10⁹ N m²/C²]
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Answer: C. 0.4 N
F = kq₁q₂/r² = 9 × 10⁹ × 4 × 10⁻¹²/0.09 = 0.4 N.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.