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Physics (AS & A Level) · Oct / Nov 2025 · Paper 13 · Question 37

9702Kirchhoff’s laws

The diagram shows the currents in part of an electric circuit. The resistors are identical. Which equation is not correct?

  1. AI1 = I2 + I4 + I5
  2. BI2 = I1 – I3
  3. CI2 = I3 + I4 + I5
  4. DI4 = I3 – I5

As printed in the paper

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Correct answer: C. I2 = I3 + I4 + I5

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