Technician exam question T5A04
Subelement T5, ELECTRICAL PRINCIPLES· Group T5A
What term describes the number of times per second that an alternating current makes a complete cycle?
- A.Pulse rate
- B.Wave number
- C.Frequency (correct answer)
- D.Wavelength
WhyFrequency describes the number of times per second that an alternating current makes a complete cycle. The number of complete cycles an alternating current completes per second is its frequency, answer C. "Pulse rate" (A) and "wave number" (B) aren't the terms used for this, and wavelength (D) describes a signal's physical length, a related but different quantity that depends on frequency and propagation speed.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.
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