Question

when the currentpass to the bulbthebulbget hot

Answer 1

When current passes from the filament of a bulb then the filament gets hot because when current passes through the tungsten wire Which is used as the filament it produces heat due to the heating effect of current.

Answer 2

Originally Answered: Why does a bulb glowwhen electric current passes through it? Any object having high temperature glows. When current is passed through filament of a electric bulb, it's temperature increase due to the current and it starts glowing.