In a step-down transformer, which describes the primary winding compared with the secondary winding?

A step-down transformer reduces voltage from the primary winding to the secondary winding, so the primary has the higher voltage. In a transformer, voltage is proportional to the number of turns of wire, so the higher-voltage primary also has more coils (turns) than the secondary. Therefore, the primary winding has higher voltage and more coils of wire.

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