Physics 9702 · AS & A Level · Physical quantities

Physical quantities — practice question

The diagram illustrates the currents in one section of an electric circuit. The resistors are identical. Which equation is not correct?

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

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