IB Physics SL B.5.11 Kirchhoff's Laws

Practise applying junction and loop equations with consistent current directions and potential signs, linking them explicitly to conservation of charge and energy.

Exam points

set total current entering a junction equal to total current leaving as conservation of charge
sum emfs and potential drops around a closed loop to zero with one consistent traversal direction
combine independent junction and loop equations to solve unknown branch currents or component voltages

[Maximum number: 2]

Identify the laws of conservation that are represented by Kirchhoff's circuit laws.

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B.5.11—Kirchhoff’s laws question 1