In a transformer if the voltage in the primary circuit increases, what happened to the current in the secondary circuit?

If the voltage in the primary circuit of a transformer increases, the current in the secondary circuit will also increase. This is because the relationship between voltage and current in a transformer is determined by the turns ratio of the transformer. When the voltage in the primary circuit increases, it causes a corresponding increase in the magnetic field in the transformer core, which in turn induces a higher voltage in the secondary circuit. This higher voltage in the secondary circuit will result in a higher current flowing through the secondary circuit, according to Ohm's Law (I = V/R).

Increases