Question

What is the filament in a light bulb made of?​

Answer 1

tungsten wire

Incandescent light bulbs consist of an air-tight glass enclosure (the envelope, or bulb) with a filament of tungsten wire inside the bulb, through which an electric current is passed.

Answer 2

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The filament in a light bulb is usually made of tungsten. Tungsten is a metal with a very high melting point and low vapor pressure, making it ideal for use in light bulbs. It can withstand the heat of the electric current passing through it without melting or evaporating, and its low vapor pressure prevents it from reacting with other materials in the bulb, ensuring a long life for the bulb.

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CreativeAB