The flow of positive and negative electric currents through a conductor and back to the generating source is called a complete electric current.

• A. Electrical Track
• B. Circuit Path
• C. Alternating Currents
• D. Complete Electric Current

Answer: (D)

Current flows only when there is a closed loop that carries charges from the source, through a conductor, and back to the source. The phrase “complete electric current” matches this idea by describing a full, closed path for the current to travel. Without that closed loop, the current would stop. The other terms don’t convey this full concept: an electrical track isn’t standard terminology for a circuit; a circuit path suggests a route but not necessarily the completed loop; alternating currents refer to the direction of flow changing over time, not the requirement of a closed circuit.