WAEC Physics 2018 Objective — Question 32
Question 32 of 50 from the West African Examinations Council (WAEC) Physics 2018 Objective paper, with the correct answer and a full explanation.
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The primary of a transformer has 100 turns and its secondary has 200 turns. If the voltage at the primary is 100V, determine the voltage at the secondary
- A. 50V
- B. 100V
- C. 200VCorrect
- D. 400V
Explanation
Vs/Vp = Ns/Np → Vs = 100×(200/100) = 200V.
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