Lesson: Chapter 10 — Power and energy in electrical appliances

10.3. Efficiency and saving energy 1 of 4 Reset answers

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Question 1

Which lamp in table 10.1 uses the least power for about the same light?

A The filament bulb B The LED C The fluorescent tube D The CFL

The right answer is the one marked above.

The LED. 6–8 W, against 60 W for a filament bulb, and it lasts about 50 000 hours.

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