passwella.
Menu

JAMB Physics 1984 Question 35

Question 35

Capacitors

In the circuit shown in Fig. 7, calculate the effective capacitance between X and Y.

Diagram for this question
  1. A.¾ μF
  2. B.2 10/13 μF
  3. C.12 μF
  4. D.4 12/13 μF
  5. E.13 μF.
Show the answer and explanation

Answer: B (2 10/13 μF)

Explanation

The 4 μF, 3 μF and 2 μF in parallel add to 9 μF. In series with the other 4 μF: C = (4 × 9)/(4 + 9) = 36/13 = 2 10/13 μF.