What happens to the output voltage of a transformer when the input is reduced?

When the input voltage to a transformer is reduced, the output voltage will also decrease. This relationship is governed by the principles of electromagnetic induction and the turns ratio of the transformer. In a transformer, the alternating current in the primary winding creates a magnetic field, which induces a voltage in the secondary winding. The output voltage of the transformer is directly proportional to the input voltage and is also influenced by the number of turns in the primary and secondary coils.

If the input voltage is lowered while keeping the turns ratio constant, the induced voltage in the output will proportionally decrease because there is less magnetic energy being transferred from the primary to the secondary winding. This principle highlights the direct relationship between input and output voltage in transformers, confirming that a reduction in input leads to a decrease in output.

Other choices reflect actions not consistent with the inherent operation of a transformer under these conditions. Changes to the output voltage do not include increases or sporadic fluctuations, as they directly relate to the stability and predictability of the magnetic induction process.