Question

What is a relay?

Answer 1

A relay is an electrical switch that is operated through an electromagnet. It is commonly used to control a high-power circuit with a low-power signal. Relays are often used in applications where it is necessary to control a circuit remotely or where multiple circuits need to be controlled by a single signal.

Answer 2

A relay is an electrically operated switch that is used to control a circuit by opening or closing contacts in response to an electrical input. Relays are commonly used in applications where one circuit needs to control another circuit, such as in industrial automation, automotive electronics, and electronic devices.