Physics 9702 · AS & A Level · Kirchhoff's laws

Kirchhoff's laws — practice question

In the circuit diagram, currents $I_1$, $I_2$, $I_3$, $I_4$ and $I_5$ are shown in different branches. Which equation is correct?

  • A$I_1 = I_2 + I_3$
  • B$I_2 = I_1 + I_3$
  • C$I_3 = I_4 + I_5$
  • D$I_4 = I_5 + I_3$

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