What is the main role of a positive (hot) wire in electrical systems?

The main role of a positive (hot) wire in electrical systems is to carry current to appliances. This wire is responsible for delivering electrical energy from the power source to various devices, enabling them to function. When you connect an appliance, it uses the energy flowing through the hot wire to operate, whether it's an electric motor, heater, or any other device that requires electrical power.

The hot wire is typically color-coded, often black or red, and is an essential component of a complete electrical circuit, which also includes a neutral wire that serves a different purpose—returning the current back to the power source. Understanding this role is crucial in electrical safety and wiring practices, as it emphasizes the importance of the hot wire in providing the energy necessary for electrical devices to perform their tasks.