The coil of a relay is energized by applying voltage across its terminals; it is considered what kind of device?

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Multiple Choice

The coil of a relay is energized by applying voltage across its terminals; it is considered what kind of device?

Explanation:
When a relay coil is energized, electrical energy is converted into magnetic energy that moves the relay’s contacts to control another circuit. That act of acting on the load to open or close a circuit is an output action. So the coil is part of an output device, since it drives the relay to perform a function in the process. It isn’t sensing or displaying information, which would make it a sensor or indicator, and it isn’t simply providing a signal into the system like an input device.

When a relay coil is energized, electrical energy is converted into magnetic energy that moves the relay’s contacts to control another circuit. That act of acting on the load to open or close a circuit is an output action. So the coil is part of an output device, since it drives the relay to perform a function in the process. It isn’t sensing or displaying information, which would make it a sensor or indicator, and it isn’t simply providing a signal into the system like an input device.

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