Post-UTME Physics 2016 Objective — Question 15
Question 15 of 20 from the Post-UTME Screening (Post-UTME) Physics 2016 Objective paper, with the correct answer and a full explanation.
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A step-down transformer reduces the voltage from 2400V to 120V. If the primary winding has 4000 turns, determine the number of turns in the secondary winding.
- A. 200.0 turnsCorrect
- B. 9.8 turns
- C. 240.0 turns
- D. 20.0 turns
Explanation
Ns = Np x Vs/Vp = 4000 x 120/2400 = 200 turns.
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