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Technician exam question T7D10

Subelement T7, PRACTICAL CIRCUITS· Group T7D

T7D10

What reading indicates that an ohmmeter is connected across a large, discharged capacitor?

  • A.Increasing resistance with time (correct answer)
  • B.Decreasing resistance with time
  • C.Steady full-scale reading
  • D.Alternating between open and short circuit

WhyAn ohmmeter connected across a large, discharged capacitor shows increasing resistance with time. A large capacitor that's fully discharged initially looks like a short circuit to an ohmmeter, but as the meter's own internal current charges it, the voltage across it rises and the apparent resistance reading climbs until the capacitor is fully charged, answer A. A decreasing reading (B), a steady full-scale reading (C), and an alternating open/short pattern (D) don't match how a capacitor actually behaves as it charges from an ohmmeter's small internal current.

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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