C. Source, light bulb, wires and switch connected to each other.
When you connected the wires to the light bulb with a source and switches, it will light. The bulb converts electrical energy into a light. When electrical current flow to it and back again to positive side, it produces light.
There are two types of a circuit.
- Simple circuit - it contains a battery or other energy source. It forms a single path which it's electricity flows.
- Parallel circuit - all components are connected across each other, it has exactly to sets of electrically common points.
A circuit is closed or complete path to make the electric current travels along.
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