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Physics (AS & A Level) · Oct / Nov 2016 · Paper 13 · Question 34

9702Electric current

A thick copper wire is connected to a thin copper wire in series with a cell, as shown. What is significantly less in the thick wire than in the thin wire?

  1. Athe charge passing a point per unit time
  2. Bthe drift speed of the electrons
  3. Cthe number density of the free electrons
  4. Dthe number of free electrons passing a point per unit time

As printed in the paper

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Correct answer: B. the drift speed of the electrons

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