Which gas is usually filled in the electric bulb?

Which gas is usually filled in the electric bulb?

  1. A. Nitrogen
  2. B. Hydrogen
  3. C. Methane
  4. D. Oxygen

A. Nitrogen
A bulb is filled with an inert gas such as argon or nitrogen slows down the evaporation of the tungsten filament compared to operating it in a vacuum. This allows for greater temperature and therefore results in greater efficiency of filament life.

Leave a Reply

Your email address will not be published. Required fields are marked *