What is the primary role of a transformer?

The primary role of a transformer is to step up or step down voltage. Transformers operate on the principle of electromagnetic induction and are designed to transfer electrical energy between two or more circuits. They change the voltage levels while maintaining the same frequency, which is essential for efficient power distribution over long distances. By increasing voltage (stepping up) for transmission, transformers minimize energy loss due to resistance in the wires. Conversely, they can also decrease voltage (stepping down) for safe usage in homes and businesses. This functionality is crucial in electrical engineering, as it allows for efficient transmission and proper power supply handling.