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Physics (AS & A Level) · Oct / Nov 2016 · Paper 13 · Question 37

9702Kirchhoff’s laws

The diagram shows currents I1, I2, I3, I4 and I5 in different branches of a circuit. Which equation is correct?

  1. AI1 = I2 + I3
  2. BI2 = I1 + I3
  3. CI3 = I4 + I5
  4. DI4 = I5 + I3

As printed in the paper

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Correct answer: A. I1 = I2 + I3

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