What are the two main purposes of the terminals on a switch or receptacle?

The two main purposes of the terminals on a switch or receptacle are primarily to serve as a contact interface and to facilitate the bundling of stranded wire. The terminals provide a physical connection point where electrical wires are connected to the device, ensuring that electrical current can flow through the switch or receptacle to power an electrical device.

The contact interface allows for a secure connection between the terminal and the wire, ensuring reliable operation. Additionally, when using stranded wire, the terminals help to keep the wires organized and properly secured, preventing potential loose connections or shorts which could arise from unmanageable wiring.

In contrast, other options focus on functions like voltage regulation, circuit control, and safety mechanisms, which are not the primary roles of the terminals themselves. While these aspects are important in electrical systems, they relate more to the overall function of the devices rather than the specific purpose of the terminals. Similarly, terminal functions related to device configuration or grounding are important but secondary to the basic operational roles of connecting and securing wires.