Technician exam question T5A02
Subelement T5, ELECTRICAL PRINCIPLES· Group T5A
T5A02
Electrical power is measured in which of the following units?
- A.Volts
- B.Watts (correct answer)
- C.Watt-hours
- D.Amperes
WhyElectrical power is measured in watts. Electrical power, the rate at which energy is used or delivered, is measured in watts, answer B. Volts (A) and amperes (D) measure voltage and current respectively, and watt-hours (C) measure total energy consumed over time, not the instantaneous rate that power describes.
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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