2. A closed circuit It is electric circuit providing an uninterup- Ted endless path for the flow of the current.
3. Open circuit . Any circuit that is not complete is considered an open circuit.
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5. Why does a light bulb stop burning? It goes off because the filament broke.
6. How does a light bulb work? The electric bulb is made of transparent or translucent glass. Its filament is not broken and it works because the electricity current makes the filament very hot.