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An incadescent bulb lights up because the voltage source creates a current through the filament of the bulb and it heats up because of its composition and gives off light as a result. No electricity, no voltage and no current.

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14y ago

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Can graphite let electricity turn on a light bulb?

No, graphite itself cannot conduct electricity in the same way as a metal wire. Graphite is a good conductor of electricity when in a specific form, such as in a pencil lead, but it is not typically used to power a light bulb without a complete circuit.


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When you turn off a light, you are breaking the circuit that allows electricity to flow through the light bulb, causing the light bulb to turn off. The electricity in the circuit is still present and will continue to flow until the power source is disconnected or turned off.


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What materials you need to turn a light bulb on?

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