What type of device is an electrical transformer?

An electrical transformer is a device specifically designed to change voltage levels in an electrical circuit. It operates on the principle of electromagnetic induction and consists of primary and secondary coils wound around a magnetic core. When an alternating current flows through the primary coil, it creates a changing magnetic field that induces a voltage in the secondary coil. This process allows transformers to either step up (increase) or step down (decrease) voltage levels while maintaining the same frequency.

Transformers are essential in electrical distribution systems, enabling efficient transmission of electrical power over long distances. By adjusting voltage levels, they help minimize energy loss due to resistance in the wires and ensure that electricity is delivered safely and effectively to homes and businesses. Understanding the function of transformers is crucial for anyone involved in electrical system installation and maintenance, as they play a central role in power distribution networks.