Question

explain mechanism of glowing bulb

Answer 1

Electricity flows through a thin tungsten wire in the light bulb called the filament. ... A filament has a lot of resistance to electricity. Therefore as a result of this, the filament heats up and starts glowing, converting electrical energy to light energy.

Answer 2

When a light bulb connects to an electrical power supply, an electrical current flows from one metal contact to the other. As the current travels through the wires and the filament, the filament heats up to the point where it begins to emit photons, which are small packets of visible light.