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JAMB Physics 1980 Question 9

Question 9

Capacitors

The total capacitance of the circuit above is

Diagram for this question
  1. A.0.25 mF
  2. B.0.50 mF
  3. C.0.75 mF
  4. D.1.25 mF
  5. E.1.50 mF
Show the answer and explanation

Answer: E (1.50 mF)

Explanation

The three 2 mF capacitors in parallel add to 6 mF. In series with 2 mF: C = (2 × 6)/(2 + 6) = 1.5 mF.