Technician exam question T5D06
Subelement T5, ELECTRICAL PRINCIPLES· Group T5D
T5D06
What is the resistance of a circuit that draws 4 amperes from a 12-volt source?
- A.3 ohms (correct answer)
- B.16 ohms
- C.48 ohms
- D.8 ohms
WhyA circuit that draws 4 amperes from a 12-volt source has a resistance of 3 ohms. Ohm's law gives resistance as voltage divided by current: 12 volts divided by 4 amperes works out to 3 ohms, answer A. B, C, and D don't match that division.
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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