Lighting circuits are electrical systems designed to power and control lighting fixtures in homes and buildings. They typically consist of wires, switches, and light bulbs, allowing users to turn lights on and off or adjust their brightness. These circuits are usually connected to a main electrical panel, which distributes power throughout the property. In a standard lighting circuit, the switch controls the flow of electricity to the light fixture. When the switch is turned on, electricity flows through the circuit, illuminating the bulb. Proper installation and safety measures are essential to prevent electrical hazards and ensure efficient operation of the lighting system.