A pump delivers 180 W of useful power from 300 W input. A redesigned pump delivers the same useful power from 240 W input.
Calculate the redesigned pump's efficiency as a percentage.
[2 marks]AQA GCSE Physics · Higher · Paper 1
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AQA GCSE Physics Higher, Paper 1
- 8463/1H
- 1 hour 45 minutes
- 100 marks
- Energy, electricity, particle model of matter, atomic structure
2 papers · 200 marks. Paper 1 covers topics 1 to 4, Paper 2 topics 5 to 8. Questions here are original practice, not past papers.
Covers the Combined Science content, most of AQA Physics 8463. Physics-only topics such as space physics, static electricity, moments and lenses are not included yet.