Marine Electrical Systems USCG Question #1325 (Set 45)

If a digital multimeter is set up as shown in figure "A" of the illustration to test a capacitor, what would the display read if the capacitor is functioning properly? EL-0213

USCG Exam Illustration EL-0213
USCG Examination Diagram: Illustration EL-0213
Official USCG Answer & Rule Citation

Correct Answer: Option B — the ohmic value would initially read very low, but over time the ohmic value would gradually rise to an extremely high value (OL ohms)

When an ohmmeter is connected to a capacitor, it supplies a DC voltage that charges the dielectric. Initially, the capacitor acts as a short circuit (low resistance). As it charges, the current flow decreases, causing the meter to show a rising resistance until it reaches an open-circuit state.

100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.