Energy, power, and units
Energy, power, and units
Energy is transferred when something happens, such as heating water, turning a turbine, or lighting a lamp. Power tells you how quickly that energy is transferred, so energy and power are not the same quantity.
Step-by-step lessons covering OCR GCSE Physics Powering Earth for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Foundation Tier) or Paper 3 and Paper 4 (Higher Tier) format. Paper 2 and Paper 4 include synoptic questions that draw on Topics P1–P4, so revisit earlier topics before final exams rather than treating each paper as self-contained.