A transformer has a primary voltage V1 = 120 V and a turns ratio N2/N1 = 2. What is V2?

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Multiple Choice

A transformer has a primary voltage V1 = 120 V and a turns ratio N2/N1 = 2. What is V2?

Explanation:
In an ideal transformer, voltages scale with the turns ratio: V2 = (N2/N1) × V1. Since the turns ratio is 2, V2 = 2 × 120 V = 240 V. This means the secondary sees twice the primary voltage. (Power is conserved, so I2 = (N1/N2) × I1; the current would halve if the voltage doubles.)

In an ideal transformer, voltages scale with the turns ratio: V2 = (N2/N1) × V1. Since the turns ratio is 2, V2 = 2 × 120 V = 240 V. This means the secondary sees twice the primary voltage. (Power is conserved, so I2 = (N1/N2) × I1; the current would halve if the voltage doubles.)

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