Question

Why is the light bulb is filled with a inert gas?

Answer 1

An incandescent light bulb produceslight with a tungsten-wire filament heated to a high temperature by an electric current passing through it until it glows. The hot filament is protected from oxidation with a glassbulb that is either evacuated or filledwith inert gas.

Answer 2

Answer:

Argon gas is used in fluorescent and incandescent light bulbs to stop the oxygen in the light bulbs from corroding the hot tungsten filament. The use of argon in light bulbs prevents the evaporation of the tungsten filaments, which results in increased light bulb life.