In which of the following applications would you most likely find a general-purpose relay?

A general-purpose relay is designed for everyday switching tasks and is ideal for applications that involve relatively low power and low voltage. The light-duty switching context typically requires a device that can operate reliably under conditions where the load is not particularly high. General-purpose relays are often utilized in situations like controlling lights, small motors, or low-power circuits, making them well-suited for residential and light commercial applications.

While other options such as heavy machinery, high voltage control, and automotive systems may require more specialized types of relays or contactors that can handle greater loads, higher voltages, or specific automotive functions, light-duty switching aligns perfectly with the capabilities and construction of general-purpose relays. These relays can manage typical household and light commercial loads effectively without the need for the robust features that high-power applications may demand.