Question
Sun April 03, 2011 By: Joseph George

argon and neon are gases which are non-conductors of electricity then how does current flow in a lighted bulb?

Expert Reply
Sun April 03, 2011

Dear student

When electric current is passed through the filament of the bulb; it becomes red hot and emit lights. To protect this filament from evaporating or catching fire, the bulbs are either evacuated or filled with inert gases like neon or argon.

 

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