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JAMB Physics 2016 Question 2

Question 2

Electromagnetic Induction

The electromotive force in the secondary winding of the transformer shown above is

Diagram for this question
  1. A.stabilizing.
  2. B.reducing.
  3. C.increasing.
  4. D.varying.
Show the answer and explanation

Answer: C (increasing.)

Explanation

The output (secondary) coil has more turns than the input coil, so the e.m.f. in the secondary is larger than the input voltage: a step-up transformer.