how does a light bulb work ?
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Answer:
Essentially, the lightbulb is a very thin filament of hard-to-melt metal – tungsten, usually – encased in a glass bulb filled with inert gases so that the filament doesn't oxidise and disintegrate. The electricity causes the wire to glow and a portion of that energy is turned into light.
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Explanation:
When current flows through the bulb, heat is produced by the conductor ( tungsten ), so the bulb glows. It works on the principle : Heating effect of electric current.
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