During a conservation trial, three mains-powered appliances are used for the durations shown. The cabinet warms samples, the fan moves air out of the room and the pump moves water through pipes.
| Equipment | Power rating | Operating time |
|---|---|---|
| warming cabinet | 1.2 kW | 20 minutes20\ \text{minutes}20 minutes |
| extraction fan | 180 W | 4.0 hours4.0\ \text{hours}4.0 hours |
| circulation pump | 100 W | 10 hours10\ \text{hours}10 hours |
Describe the energy transfers for the three appliances in the table.
Use the information in the table to compare the total energy transferred by the appliances, including which transfers the greatest amount and which transfers the least. Include the changes in energy stores in your answer.
81 exam-style questions on Edexcel GCSE Physics 10.4 Mains electricity, covering 10.4.1 Direct and alternating current, 10.4.2 Live, neutral and earth wires; safety, 10.4.3 Mains wire potential differences and dangers, and 10.4.4 Power ratings and energy use. Each one has a worked solution and a mark scheme showing where the marks go.