Four ovens are identical except for a layer of material inside their walls. Each oven is kept at the same temperature inside.
| Oven | Thermal conductivity of layer material | Layer thickness |
|---|---|---|
| J | low | 20 mm |
| K | high | 50 mm |
| L | low | 50 mm |
| M | high | 20 mm |
Which oven will transfer energy to the kitchen at the highest rate?
oven L
oven M
oven J
oven K
104 exam-style questions on AQA GCSE Physics 1.2 Conservation and dissipation of energy, covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.