GCSE Physics AQA HT Topic 1: Energy - Efficiency Questions Worksheet

Higher Tier efficiency calculations worksheets to help GCSE Physics students master calculations using both efficiency equations:

efficiency = useful output energy transfer ÷ total input energy transfer

efficiency = useful power output ÷ total power input

The questions increase gradually in difficulty, beginning with calculating efficiency as a decimal and a percentage before progressing to rearranging the equation to calculate the useful output or the total input. Students must also convert between units and prefixes, including kilojoules, megajoules, kilowatts and megawatts, change percentages into decimals, work out useful energy from wasted energy, and combine efficiency with gravitational potential energy (Ep = m g h). A challenge question compares the power input of a filament bulb and an LED bulb.

These efficiency calculations worksheets include:

• Practice questions
• Clear worked examples
• A separate scaffolding sheet
• Quick answers and fully worked solutions
• PDF and editable Word versions

Ideal for classroom practice, independent study, homework, intervention or revision. The separate scaffolding allows students to complete the same Higher Tier questions with additional support.

Suitable for Higher Tier students studying AQA GCSE Physics (4.1.2.2) or Combined Science: Trilogy (6.1.2.2), as well as other GCSE exam boards.

Foundation Tier version available at https://www.tes.com/teaching-resource/-13650205