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Physics (AS & A Level) · May / June 2023 · Paper 12 · Question 36

9702Kirchhoff’s laws

Three identical cells each have electromotive force (e.m.f.) E and negligible internal resistance. The cells are connected to three identical resistors, each of resistance R, as shown. [circuit diagram with three cells of e.m.f. E and three resistors of resistance R] What is the potential difference across one of the resistors?

  1. A0
  2. B\frac{E}{3}
  3. C\frac{2E}{3}
  4. DE

As printed in the paper

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Correct answer: B. \frac{E}{3}

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