In a transformer, which winding is connected to the power source?

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Multiple Choice

In a transformer, which winding is connected to the power source?

Explanation:
Power flows into a transformer through the winding that is connected to the source—the primary winding. When AC is applied to the primary, current creates a changing magnetic flux in the core, which links to the other windings and induces voltages in them. The secondary winding then delivers the transformed voltage to the load, with the turns ratio determining whether the voltage is stepped up or down. Additional windings like tertiary or quaternary exist for auxiliary purposes or stabilization in some designs, but they are not the main input side in standard operation.

Power flows into a transformer through the winding that is connected to the source—the primary winding. When AC is applied to the primary, current creates a changing magnetic flux in the core, which links to the other windings and induces voltages in them. The secondary winding then delivers the transformed voltage to the load, with the turns ratio determining whether the voltage is stepped up or down. Additional windings like tertiary or quaternary exist for auxiliary purposes or stabilization in some designs, but they are not the main input side in standard operation.

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