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2 years ago

7

An electric motor uses 670 kJ of electrical energy to generate 595 kJ of mechanical kinetic energy. What is the efficiency of th

e motor?
Full example, please...
Thank you!

1 answer:

stellarik [79]2 years ago

4 0

Used energy=595KJ
Total energy=670KJ

Efficiency:-

$\\ \tt\longmapsto \dfrac{595}{\cancel{670}}\times \cancel{100}$

$\\ \tt\longmapsto \dfrac{595}{67}\times 10$

$\\ \tt\longmapsto 8.88(10)$

$\\ \tt\longmapsto 88.8\%$

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