This key facts covers Work Done and Power within Work Done & Energy Transfer for GCSE Physics. Revise Work Done & Energy Transfer in Forces for GCSE Physics with 13 exam-style questions and 6 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 7 of 13 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
⚡ Work Done and Power
Power is the rate of doing work:
P = W / t
Power (W) = Work done (J) / Time (s)
- Unit: Watts (W)
- 1 Watt = 1 Joule per second
- A more powerful engine does MORE work in the SAME time
Example: A motor does 6000 J of work in 30 s.
P = 6000 / 30 = 200 W
Practice questions for Work Done & Energy Transfer
Which equation correctly represents work done?
Explain what is meant by 'work done' in physics. Include the conditions required for work to be done.
Quick recall flashcards
Key Facts About Work Done
Unit: Joules (J) — same as energy!
Key Facts About Work Done
1 Joule = 1 Newton × 1 metre (1 J = 1 Nm)