NCERT Question 18 (a) - Chapter 12 Class 10 - Electricity

Last updated at April 16, 2024 by

electric-bulb-teachoo.png

 

Why is the tungsten used almost exclusively for filament of electric lamps?

 

Answer

Tungsten metal is used exclusively for making the filament of electric bulbs because it has a very high melting point.

Due to its high melting point, the tungsten filament can be kept white hot without melting away.

Other reasons for using tungsten are

  • It is highly flexible
  • It has a low rate of evaporation at high temperature.
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