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AP Physics C: E&M
11.7 Kirchhoff’s Junction Rule
BeginnerMCQDrawing RepresentationsConceptual15.6k
Five wire branches meeting at a central junction.
Five wire branches meeting at a central junction.
A single junction in a direct-current circuit connects five separate wire branches in a steady state. The currents in branches 1 through 4 are given in the table.

BranchCurrent MagnitudeDirection Relative to Junction
Branch 17 AToward junction
Branch 22 AAway from junction
Branch 34 AToward junction
Branch 45 AAway from junction

Which of the following diagrams correctly represents the magnitude and direction of the current in branch 5 to satisfy conservation of electric charge?

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