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13 June, 09:53

What is the efficiency of a device that gives you 10 units of useful energy for every 100 units you put in it?

A. 1

B. 0.5 What is the efficiency of a device that gives you 10 units of useful energy for every 100 units you put in it?

A. 1

B. 0.5

+5
Answers (1)
  1. 13 June, 10:47
    0
    Efficiency = (useful output) / (input). For this device, it's 0.1 or 10%. The correct answer isn't listed as one of the choices.
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