Technician exam question T5C10
Subelement T5, ELECTRICAL PRINCIPLES· Group T5C
T5C10
How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes?
- A.4.8 watts
- B.30 watts (correct answer)
- C.14.5 watts
- D.0.208 watts
WhyA voltage of 12 volts DC and a current of 2.5 amperes delivers 30 watts. Power equals current times voltage, so 2.5 amperes times 12 volts is 30 watts, answer B. A, C, and D don't match that straightforward multiplication.
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.