What is the primary use of transformers in electrical systems?

Transformers are primarily used to change voltage levels in electrical systems. They operate on the principle of electromagnetic induction and consist of two coils of insulated wire — the primary winding and the secondary winding. When an alternating current passes through the primary winding, it creates a magnetic field that induces a voltage in the secondary winding.

This ability to increase (step-up) or decrease (step-down) voltage levels is crucial for efficient power distribution. High voltages are used for long-distance transmission to minimize energy losses, while lower voltages are required for safe use in homes and businesses. By effectively transforming voltage levels, transformers play an essential role in the overall functionality of electrical power systems, ensuring that electricity can be safely and efficiently delivered to end-users.