Physics · Oct / Nov 2019 · Paper 12 · Question 31
The diagram shows a metal lightning conductor attached to a building. [diagram showing a building with a lightning conductor and earth connection] Why is the lightning conductor made of copper?
- ABoth positive and negative charges can flow through copper.
- BCopper can be electrostatically charged.
- CSo the lightning conductor has a low electrical resistance.
- DSo the heat is conducted away quickly.
As printed in the paper
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Correct answer: C. So the lightning conductor has a low electrical resistance.
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