Question

how does an electric bulb lights up when an electric current flows through it​

Answer 1

Answer:

due to flow of electron..An electric bulb lights up when an current flow through it.....

Answer 2

Light bulbs consist of only a few basic parts. The metal base has two metal contacts that connect to the ends of an electrical circuit. The metal contacts attach to two stiff wires, which themselves are connected by a thin metal filament. The filament is the thin wire you see in the middle of the light bulb, held up by a glass mount. All of this exists within a glass bulb filled with an inert gas, such as argon.
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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.