What are circuits and why do we need them? What happens if you break a circuit?
- Circuits are composed of a voltage source and components.
- The current in a series circuit is the same everywhere as there is only one path.
- A parallel circuit has more than one path, so if one part breaks then the current can still flow.
- Christmas lights are connected in series and house lights are connected in parallel circuits.
Circuits are fundamental to the flow of electrical current.
Without a complete circuit, electrical current cannot exist, because the electrons have nowhere to flow – meaning circuits are vital for keeping the lights on.
A useful circuit will always have a voltage source, like a battery, and components which will put ...
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