A transformer consisting of two coils wrapped around an iron core is connected t

Question

A transformer consisting of two coils wrapped around an iron core is connected to a generator and a resistor, as shown in the drawing. There are 11 turns in the primary coil and 21 turns in the secondary coil. The peak voltage in the resistor is 77 V. What is the peak emf of the generator?

A transformer consisting of two coils wrapped around an iron core is connected to a generator and a resistor, as shown in the drawing. There are 11 turns in the primary coil and 21 turns in the secondary coil. The peak voltage in the resistor is 77 V. What is the peak emf of the generator?

Explanation / Answer

V2 = n*V1

V1 = V2 / n

n = 21/11 = 1.909

V1 = V2 / 1.909

V1 = 77 /1.909

V1 = 40.33

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