Red Seal Electrician Practice
DC circuitsQuestion 696 of 1506

At a wire junction, 4 mA and 7 mA flow in. Only one other wire is connected. What current flows in that wire?

  1. 11 mA out of the junction
  2. 3 mA out of the junction
  3. 28 mA out of the junction
  4. 11 mA into the junction
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Correct answer: 11 mA out of the junction

The current out must equal the current in: 4 mA + 7 mA = 11 mA.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 6.4: Kirchhoff’s Current Law (KCL)

Practice dc circuits

Questions last reviewed: 18 October 2026