Physics
Grade-7
Easy
Question
The filament of an electric bulb is made up of
- Tungsten
- Silver
- Copper
- Nichrome
Hint:
Tungsten
The correct answer is: Tungsten
Tungsten is used as a filament in electric bulb because it has high melting point and it does not oxidize. Thus, tungsten filament does not melt even when a large amount of heat is produced due to passage of current through the filament.
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