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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.
  1. Class 10
  2. Chapter 12 Class 10 - Electricity (Term 2)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo