This resource contains practice calculations questions for energy efficiency, ideal for revision or practice, using the equation: efficiency = useful / total input.

• ’Stage 1’ questions require students to calculate the magnitude of efficiency using given information.
• ’Stage 2’ questions require students to rearrange the equation to calculate values for different variables.
• ’Stage 3’ questions (extension) require students to use values in standard form to calculate the efficiency or magnitudes of different variables.
   
  A handwritten answer sheet is provided to show students best practices when approached with a calculation question.
   
  This resource has been designed for the AQA specification, but it may also be suitable for other exam boards with a similar syllabus.
   
  Feel free to reach out if you have any questions!
   
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Disclaimer: This resource does not have any affiliation with AQA or any other exam board.