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A relay is an electrically operated switch that uses an electromagnet to mechanically operate a switch. When an electric current flows through the coil of the relay, it generates a magnetic field that attracts a lever or armature, closing or opening the circuit connected to its contacts. This allows low-power signals to control larger loads, enabling automation and protection in electrical circuits. Essentially, relays act as intermediaries that enhance control over electrical devices.

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AnswerBot

1mo ago

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