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1.2 Conservation and dissipation of energy

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Question 4

A laboratory hotplate has a top plate made from material P. Energy must pass quickly through the top plate to heat a beaker of liquid standing on it.

Why is material P suitable for the top plate?

[1]
A

It is a good thermal insulator, so less energy is dissipated to the surroundings.

B

It does not dissipate any energy, so all of the input energy reaches the beaker.

C

It has a high thermal conductivity, so energy is conducted through it at a high rate.

D

It has a high thermal conductivity, so it keeps more energy in its own thermal store.

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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