A very thin wire made of a special material(such as tungsten) which glows in a bulb.
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Explanation:
An incandescent light bulb has a small thin wire with two bigger wires holding it up. This wire is called a filament. The filament is the part of the light bulb that produces light. Filaments in incandescent light bulbs are made of tungsten.
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12
Explanation:
it's called filament..
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