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JAMB Physics 1980 Question 21

Question 21

Capacitors

What is the relative permitivity of a capacitor if its capacitance with a medium as dielectric is 16 farads and its capacitance with vacuum as dielectric is 2 farads?

  1. A.−
  2. B.½
  3. C.2
  4. D.8
  5. E.32
Show the answer and explanation

Answer: D (8)

Explanation

Relative permittivity = capacitance with dielectric ÷ capacitance with vacuum = 16/2 = 8.