nunu910 nunu910

19-01-2021
Physics

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A fan that is switched on for 1 minute uses 500 W usefully but also wastes 300 W through the emission of sound and heat. What's the efficiency of the fan?

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AggieEng AggieEng

19-01-2021

Explanation:

Efficiency is defined as the ratio between the useful output over the total amount consumed. [tex]E = \frac{useful}{total}[/tex]

The fan does 500W of useful work while wasting 300 W. The total power consumption is 800 W (500 + 300).

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