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AP Physics 2
11.7 Kirchhoff’s Junction Rule
IntermediateMCQMathematicalConceptual21.1k
Five-way junction with four labeled currents.
Five-way junction with four labeled currents.
Five conducting wires meet at a single junction in a circuit, as shown in the diagram. Four of the wires carry known currents: \(I_1 = 4.0\text{ A}\) toward the junction, \(I_2 = 2.5\text{ A}\) away from the junction, \(I_3 = 1.5\text{ A}\) toward the junction, and \(I_4 = 6.0\text{ A}\) away from the junction. What are the magnitude and direction of the current \(I_5\) in the fifth wire?

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