DC circuitsQuestion 539 of 1506

What is a circuit?

  1. A source with a switch
  2. A single wire to earth
  3. An unbroken loop of conductive material
  4. A closed container of charge
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Correct answer: An unbroken loop of conductive material

A circuit lets electrons flow continuously.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 1.3: What Are Electric Circuits?

Practice dc circuits

Questions last reviewed: 18 October 2026