The primary coil of a transformer is connected to a source of alternating current of voltage V. The voltage of the secondary current is

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The voltage of the secondary current in a transformer can be lower, equal to, or higher than the voltage of the primary current, depending on the ratio of turns in the primary and secondary coils. This ratio determines whether the transformer is step-down, step-up, or has a 1:1 ratio for equal voltage transformation.

The Primary Coil of a Transformer Is Connected to a Source