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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?

  1. Aan increase in the length of the wire
  2. Ban increase in the radius of the wire
  3. Can increase in the resistance of the wire
  4. 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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