Technician exam question T7D04
Subelement T7, PRACTICAL CIRCUITS· Group T7D
T7D04
Which instrument is used to measure electric current?
- A.An ohmmeter
- B.An electrometer
- C.A voltmeter
- D.An ammeter (correct answer)
WhyAn ammeter is the instrument used to measure electric current. An ammeter is the instrument built to measure electric current, answer D. An ohmmeter (A) measures resistance, an electrometer (B) measures very small voltages or charge, and a voltmeter (C) measures voltage, none of which is what an ammeter does.
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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