Technician exam question T5A10
Subelement T5, ELECTRICAL PRINCIPLES· Group T5A
T5A10
Which term describes the rate at which electrical energy is used?
- A.Resistance
- B.Current
- C.Power (correct answer)
- D.Voltage
WhyPower is the term describing the rate at which electrical energy is used. The rate at which electrical energy is used or delivered is, by definition, power, answer C. Resistance (A) opposes current flow, current (B) is the flow of electrons itself, and voltage (D) is the electrical potential difference driving that flow, none of which describes a rate of energy use.
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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