AQA Physics Unit 1

Random calculations based on formulae in AQA's GCSE Physics Unit 1.
As well as a random selection of the formula, the equation is randomly transposed.

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Energy Efficiency

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Energy Efficiency

useful energy transferred by device = 3 J
total energy supplied = 4 J

calculate:- energy efficiency

Answers to 3 sig figs
For the formula: click 'Help' at any time.
Click 'Submit' to check your answer.

energy efficiency =

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