What device is used in an electrical circuit to reduce voltage?

The device used in an electrical circuit to reduce voltage is a transformer. A transformer operates on the principle of electromagnetic induction, using two coils of wire (primary and secondary) that are wound around a magnetic core. When alternating current passes through the primary coil, it creates a magnetic field that induces a voltage in the secondary coil.

By varying the number of turns in the primary and secondary coils, a transformer can step down (or step up) the voltage. In a step-down transformer, the secondary coil has fewer turns than the primary coil, resulting in a lower voltage output. This ability to efficiently change voltage levels is essential in power distribution systems, where high voltages need to be reduced to safer levels for use in homes and businesses.

Other devices mentioned, such as capacitors, resistors, and inductors, have different functions. Capacitors store electrical energy, resistors limit the current in a circuit, and inductors store energy in a magnetic field when current flows. However, none of these devices are designed specifically to change voltage levels like transformers are.