PhysicsElectromagnetic inductionJAMB
A transformer has 200 turns in the primary and 1000 turns in the secondary. If the primary voltage is 40 V, the secondary voltage is:
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Answer: C. 200 V
Vs/Vp = Ns/Np → Vs = 40 × 1000/200 = 200 V.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.