What effect does increasing the number of turns in the primary coil of a transformer have on the secondary voltage?

Increasing the number of turns in the primary coil of a transformer directly influences the secondary voltage due to the principles of electromagnetic induction and the turns ratio of the transformer.

In a transformer, the primary and secondary voltages are related to the number of turns in their respective coils. This relationship is expressed in the formula:

[ V_s / V_p = N_s / N_p ]

Where:

• ( V_s ) is the secondary voltage,

• ( V_p ) is the primary voltage,

• ( N_s ) is the number of turns in the secondary coil,

• ( N_p ) is the number of turns in the primary coil.

If the number of turns in the primary coil is increased while the primary voltage remains constant, the turns ratio changes. As the ratio of primary turns to secondary turns increases, it effectively increases the voltage induced in the secondary.

For example, if the primary coil has a higher number of turns, the transformer operates under the principle that a larger number of primary turns induces a corresponding larger secondary voltage, assuming the secondary turns remain constant (or if the number of turns increases proportionately). This relationship is fundamental to the operation of transformers, making it clear why increasing the turns in the primary coil