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JAMB Physics 2006 Question 32

Question 32

Capacitors

The capacitance of a parallel-plate capacitor when in air is 3 μf and in the presence of a dielectric material 6 μf. The dielectric constant is

  1. A.3.
  2. B.18.
  3. C.2.
  4. D.9.
Show the answer and explanation

Answer: C (2.)

Explanation

Dielectric constant = capacitance with dielectric ÷ capacitance in air = 6 ÷ 3 = 2.