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Two isolated charged spheres each of magnitude + 1.0 x 10\(^{-6}\) C are seperated by...

Physics
WAEC 2024

Two isolated charged spheres each of magnitude + 1.0 x 10\(^{-6}\) C are seperated by a distance of 2.0 x 10\(^{-1}\) m. Calculate the magnitude of the electrostatic force between them [K = \(\frac{1}{4\pi \epsilon_o}\) = 9 x 10\(^9\)Nm\(^2\)C\(^{-2}\)]

  • A. 2.25 x 10\(^{-1}\)N
  • B. 4.50 x 10\(^{-1}\)N
  • C. 2.25 x 10\(^1\)N
  • D. 4.50 x 10\(^1\)N
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Correct Answer: Option A
Explanation

F = \(\frac{Kq_1q_2}{r^2}\)

F = \(\frac{9 \times 10^9 \times (1.0 \times 10^{-6})^2}{(0.2)^2}\)

= 2.25 x 10\(^{-1}\)N


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JAMB CBT Mobile App 2025 - Free Download
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