A step down transformer has turns ratio 20:1. If 8V are applied across 0.4 Ω secondary then the primary current will be (a) 0.5 A (b) 1 A (c) 2 A (d) 4 A

Answer: (b). Secondary current: Is = Vs/R = 8/0.4 = 20 A (Ip)/(Is) = (Ns)/(Np) = 1/20 Ip = 20/20 = 1 A So the answer is (b) 1 A.

A step down transformer has turns ratio 20:1. If 8V are applied… | MHT CET 2026 (16 Apr, Shift 1)

Q3MHT CET 2026 · 16 APR · SHIFT 1Easy

AC Generator & Transformer

A step down transformer has turns ratio 20:1. If 8V are applied across $0.4\ \Omega$ secondary then the primary current will be

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Answer: (b)

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