Power factor and three-phaseQuestion 1017 of 1506

What is true of the neutral current in a balanced three-phase Y load with resistive loads?

It equals one line current
It is zero
It equals the sum of the three line currents
It is three times the phase current

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Correct answer: It is zero

The three equal currents, 120 degrees apart, cancel at the neutral point.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 7.2: Three-phase Power Systems

Questions last reviewed: 18 October 2026

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