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JAMB Physics 2013 Question 43

Question 43

Current Electricity

To convert a galvanometer to a voltmeter, a

  1. A.high resistance is connected to it in series.
  2. B.high resistance is connected to it in parallel.
  3. C.low resistance is connected to it in series.
  4. D.low resistance is connected to it in parallel.
Show the answer and explanation

Answer: A (high resistance is connected to it in series.)

Explanation

A voltmeter must draw very little current, so a large resistance (multiplier) is put in series with the galvanometer.