Physics (AS & A Level) · Oct / Nov 2017 · Paper 13 · Question 37
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. What is the potential difference between P and Q?
- A0
- B\frac{E}{3}
- C\frac{2E}{3}
- DE
As printed in the paper
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Correct answer: C. \frac{2E}{3}
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