This definitions covers Key Definitions 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 5 of 12 in this topic. Make sure you can use the exact wording confidently, because definition marks are often lost through vague language.
Topic position
Section 5 of 12
Practice
14 questions
Recall
25 flashcards
📖 Key Definitions
- Power
- The rate of energy transfer or the rate of doing work. Measured in watts (W).
- Watt (W)
- The SI unit of power. 1 W = 1 joule per second (1 J/s).
- Kilowatt (kW)
- A unit of power equal to 1,000 watts. Used for most household appliances.
- Kilowatt-hour (kWh)
- A unit of energy equal to 3,600,000 J. Used by energy companies to measure electricity consumption. 1 kWh = 1 kW × 1 hour.
- Work done
- The energy transferred when a force moves an object through a distance. Measured in joules (J).
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
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