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The effective capacitance between points X and Y in the diagram above is 1.0\(\mu\) F. What...

Physics
WAEC 2025

The effective capacitance between points X and Y in the diagram above is 1.0\(\mu\) F. What is the value of the capacitance?

  • A. 5.0 μ
  • B. 4.0 μ
  • C. 3.0 μ
  • D. 1.0 μ
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Correct Answer: Option D
Explanation

Effective capacitance across the parallel = C + C = 2C

Effective capacitance across the circuit = \(\frac{1}{2C} + \frac{1}{2}\) = \(\frac{1 + C}{2C}\)

∴ Effective capacitance across the circuit = \(\frac{1 + C }{2C}\) = \(\frac{1}{1}\)

 1 + C = 2C;

2C – C = 1

∴ C = 1.0 μ


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