The filament of an electric bulb is made of
2014
The filament of an electric bulb is made of
- A.
iron
- B.
nichrome
- C.
tungsten
- D.
graphite
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Correct answer: C
Tungsten is the ideal material for incandescent bulb filaments primarily because it has the highest melting point of all metals (around 3422°C or 6192°F). This allows it to be heated to a very high temperature until it glows and emits light without melting.