Red Seal Electrician Practice
AC theoryQuestion 937 of 1506

What is the angular velocity, in radians per second, of a 50 Hz system?

  1. About 50 rad/s
  2. About 157 rad/s
  3. About 314 rad/s
  4. About 7.96 rad/s
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Correct answer: About 314 rad/s

ω = 2πf = 2 × 3.1416 × 50 ≈ 314 rad/s.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 3.2: AC Inductor Circuits

Practice ac theory

Questions last reviewed: 18 October 2026