The nuclear reactor is the power supply. It's clean, renewable, and only slightly worrisome regarding permanently ruining the environment. The power is transmitted through power lines to the funky boxes in our garages (labeled Fuse Box). The power is divided into circuits. Big ones for the dryer, stove and hot water heater. Small ones for the lights and outlets. The circuit illustrated above is for a simple light. The Switch turns the light on and off by opening and closing the flow of electrons through the copper wires.
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