A catering kitchen uses three electrical appliances. Each appliance operates at constant power for the time shown.
| Appliance | Power in W\mathrm{W}W | Operating time in min\mathrm{min}min |
|---|---|---|
| hot plate | 1200 | 24 |
| warming cabinet | 600 | 120 |
| food mixer | 300 | 40 |
Which statement correctly compares the electrical energy transferred by the appliances?
The warming cabinet transfers more energy than the hot plate, which transfers more energy than the food mixer.
The hot plate transfers more energy than the food mixer, which transfers more energy than the warming cabinet.
The warming cabinet transfers more energy than the food mixer, which transfers more energy than the hot plate.
The hot plate transfers more energy than the warming cabinet, which transfers more energy than the food mixer.
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.