IB Physics SL D 2 3 Charge Conservation Questions

Practise IB Physics SL D.2.3 by applying conservation of electric charge to reactions, conductors and circuit junctions.

Exam points

Apply conservation of electric charge in particle reactions.
Determine an unknown charge by balancing total charge before and after an interaction.
Use conservation of charge to relate currents at a circuit junction.

[Maximum number: 1]

The diagram shows a junction in a circuit.

The currents in the three wires are related by $I_{1}=I_{2}+I_{3}$ .
State the fundamental law of Physics from which this relation is derived.

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