Question

when a filament lamp is in use , the temperature of the wire filament remains at 2500°C . Explain why this temperature remains constant​

Answer 1

Answer:

An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated to a high temperature, by passing an electric current through it, until it glows with visible light (incandescence).The hot filament is protected from oxidation with a glass or quartz bulb that is filled with inert gas or evacuated. In a halogen lamp, filament evaporation is prevented by a chemical process that redeposits metal vapor onto the filament, extending its life.

The resistance of wires used inside bulb is very high so on passing current it glows.