Physics (AS & A Level) · May / June 2021 · Paper 11 · Question 34
9702Resistance and resistivity
A length of wire is connected into an electric circuit. The current in the wire is measured. Which change on its own could increase the current in the wire?
- Aan increase in the length of the wire
- Ban increase in the radius of the wire
- Can increase in the resistance of the wire
- Dan increase in the resistivity of the wire
As printed in the paper
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Correct answer: B. an increase in the radius of the wire
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