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1.2 Conservation and dissipation of energy

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Question 12

Four heated storage cabinets are kept at the same internal temperature in the same room. The cabinets have equal wall areas and are identical in all other respects. Their wall properties are shown.

CabinetWall thickness in cmThermal conductivity in W/m ∘C\text{W/m}\ ^\circ\text{C}W/m ∘C
J20.15
K80.15
L20.04
M80.04

Through the walls of which cabinet is energy transferred to the room at the highest rate?

[1]
A

Cabinet M

B

Cabinet J

C

Cabinet K

D

Cabinet L

Markscheme

1.2 Conservation and dissipation of energy Questions

  1. GCSE
  2. /Physics
  3. /1.2 Conservation and dissipation of energy

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.

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