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Q.

The filament of an electric bulb is made of a thin wire of [[1]].


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Detailed Solution

The filament of an electric bulb is made of a thin wire of tungsten.
The electric bulb has a fragile filament of tungsten metal. The filament of an electric bulb has a high resistance. When electric current passes through the fragile, high-resistance filament of an electric bulb, heat is produced in it. Due to this, the filament of the electric bulb gets heated to a very high temperature and starts glowing.
 
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