Physics, asked by pratikKumarnaik, 8 months ago

Why does the bulb glow when an electric current is passed through it?

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Answered by d14sr

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--> As a result of this resistance, the filament heats up and starts glowing, converting electrical energy to light energy. This is because of the Joule-effect, which means that resistances heat up when an electrical current runs through them. This produces light and heat illuminating its surroundings.

Answered by maria9

3

PRINCIPLE : heating effects of current

when electric current is passed through the bulb the electric current is converted into heat energy in the filament of the bulb. As the filament gets heated up it emits lights and hence the bulb glows

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