Physics · May / June 2023 · Paper 12 · Question 17
5054Conduction
Which statement about copper explains why it is a better thermal conductor than glass?
- AAtomic vibration is passed on to neighbouring copper atoms slowly.
- BAtoms move through the copper and pass on kinetic energy.
- CThere are density changes within the copper.
- DThere are free electrons in the copper.
As printed in the paper
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Correct answer: D. There are free electrons in the copper.
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