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Lyrx [107]
3 years ago
10

As the electric current in a lightbulb is slowly increased, the filament glows more and more brightly. Why does this happen?

Biology
1 answer:
allochka39001 [22]3 years ago
5 0
It happens due to the inner resistance. Resistance causes heating of tungsten filament and with more resistance, a light bulb produces more light. 
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