Red Seal Electrician Practice
DC circuitsQuestion 683 of 1506

Which circuit types does Kirchhoff's Voltage Law apply to?

  1. Series circuits only
  2. Series and parallel circuits, but not combined circuits
  3. Any circuit layout, including parallel and hidden "black box" networks
  4. DC circuits that contain only one resistor and no other part
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Correct answer: Any circuit layout, including parallel and hidden "black box" networks

KVL is true for every circuit layout, because it only depends on voltages around a loop.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 6.2: Kirchhoff’s Voltage Law (KVL)

Practice dc circuits

Questions last reviewed: 18 October 2026