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Power as a rate

Power as a rate

Power is the rate at which energy is transferred, which is also the rate at which work is done. It measures how many joules are transferred each second, not the total number of joules transferred.

8.3 Power and efficiency Lesson

  1. GCSE
  2. /Physics
  3. /8.3 Power and efficiency

Step-by-step lessons on Edexcel GCSE Physics 8.3 Power and efficiency, covering 8.3.1 Power and 8.3.2 Efficiency. Each one builds up to exam-style questions. Master the required practical work and core equations early, since both papers can draw on content and maths skills from across the whole specification.

Lessons