AC theoryQuestion 496 of 1506

What is a vector?

  1. A quantity that has both magnitude and direction
  2. A quantity that has magnitude only
  3. A quantity that has direction only
  4. A quantity that never changes
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Correct answer: A quantity that has both magnitude and direction

AC voltages and currents are treated as vectors.

Source: Trigonometry and Single Phase AC Generation for Electricians (Flinn), 2.1: A Vector Primer

Practice ac theory

Questions last reviewed: 18 October 2026