An incandescent bulb works on the principle of incandescence, a general term meaning light produced by heat. An electric current is passed through a thin metal filament, heating the filament until it glows and produces light. Which pair of characters makes tungsten as a suitable element for incandescent bulb?
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The high resistivity and high melting point make tungsten a suitable element for the incandescent bulb.
Explanation:
- The tungsten filament used in incandescent bulbs has a very high melting point and can reach a temperature of nearly
° Fahrenheit.
- The glass surrounding the filament creates a vacuum and prevents oxygen in the air from reaching the hot filament.
- Without this glass covering, the filament would overheat and oxidize in a matter of seconds.
- This pair of characters such as high melting point with high resistivity makes tungsten a suitable element for the incandescent bulb.
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