Question 8:
Explain why, filament type electric bulbs are not power efficient.
Lakhmir Singh Physics Class 7
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filament bulb is consist of very high melting point tungsten wire apprx 3420c hence it conserve more energy to convert electrical energy into light energy and it emits very large amount of heat comparable to led bulbs and it means more amount of work is done hence the filament type of bulbs are not power efficient.
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