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JAMB Physics 2002 Question 47

Question 47

Magnetism

Which of the following statements is true of the properties of a moving coil galvanometer?

  1. A.There are strong hair springs to give a large control couple.
  2. B.It has a small number of turns of coil.
  3. C.The coil has a small area.
  4. D.There is a strong permanent magnet to give high magnetic flux.
Show the answer and explanation

Answer: D (There is a strong permanent magnet to give high magnetic flux.)

Explanation

A sensitive galvanometer needs a strong magnet, many turns, a large coil area and weak hair springs; only D is true.