How is lighting like an electric circuit?

Lighting is like an electric circuit in that it requires a complete pathway for electricity to flow. Just as a circuit consists of components like a power source, conductors, and a load (like a light bulb), lighting systems depend on a source of electricity, wiring, and fixtures to illuminate a space. When the circuit is closed, electricity flows, allowing the light to operate. If there is a break in the circuit, the flow of electricity stops, and the light goes out.