Energy Efficiency and Input Calculation

00:00 1 marks

A machine has an efficiency of 60%. If the useful work output is 300 J, what is the total energy input?

A

180 J
B

300 J
C

480 J
D

500 J

Hint Hint

Hint

Recall that Efficiency = (useful work output) / (total energy input).

Answer Answer
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Explanation Explanation
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Common Errors Common Errors
Real World Context Real World Context

Answer Answer

Complete Answer

500 J

Mark Scheme Mark Scheme

Answer Explanation Answer Explanation

Examiner Tips Examiner Tips

Common Errors Common Errors

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