You can put all kinds of other components in the circuit, to be powered by the cell. These could be batteries, solar panels, or a power supply connected to the mains - anything that can provide power to our circuit.Ī wire from the cell can then be connected to a component like a bulb.Īnd to complete the circuit you need to connect it back to the other side of the cell. You start with a cell, or combination of cells. We can see how circuits work, and represent them with some simple diagrams, using basic electrical components like these. It’s called a circuit.įor example, the lights in most houses and flats are part of a circuit controlled by the consumer unit, where power enters the house. For electricity to flow, everything needs to be connected in a big ring.
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