This exam focus covers Exam Focus: Power within Power for GCSE Physics. Revise Power in Energy for GCSE Physics with 14 exam-style questions and 25 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 10 of 12 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 10 of 12
Practice
14 questions
Recall
25 flashcards
🎯 Exam Focus: Power
This topic is examined in Edexcel 1PH0/1 (Paper 1). Edexcel questions frequently give a scenario (e.g. a tumble dryer running for a given time, a car engine) and ask you to calculate power, compare running costs, or evaluate energy efficiency. The "Suggest" command word is common — be ready to apply power concepts to unfamiliar contexts.
How this topic appears in exams:
- Calculation questions (2-4 marks): Calculate power from energy and time, or rearrange to find time or energy
- Electrical power (2-3 marks): Use P = IV or P = I²R to calculate electrical power
- Energy cost (3-4 marks): Calculate kWh used and find the cost of electricity
- Comparing appliances (2 marks): Explain why a higher-power appliance is not always more expensive to run
- Unit conversions: Convert minutes to seconds, kW to W, etc.
Always show your working and include units at every step. Marks are awarded for substitution and correct units even if the final answer is wrong.
Keep building this topic
Read this section alongside the surrounding pages in Power. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Power
Which of the following is the correct definition of power?
State what is meant by the term 'power' in physics and state its unit.
Quick Recall Flashcards
14 questions on Power — practise free
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