passwella.
Menu

JAMB Physics 2014 Question 43

Question 43

Electromagnetic Induction

Use the diagram above (the transformer) to answer this question. The electromotive force in the secondary winding is

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

Answer: A (increasing.)

Explanation

With more turns on the secondary than on the primary, the e.m.f. induced in the secondary is larger than the input voltage (Vs/Vp = Ns/Np).