Marine Electrical Systems USCG Question #423 (Set 15)

What is the direction of electron current through the load resistor in the circuit shown in the illustration? Illustration EL-0085

USCG Exam Illustration EL-0085
USCG Examination Diagram: Illustration EL-0085
Official USCG Answer & Rule Citation

Correct Answer: Option B — Always from the grounded end to point "TP5".

In a regulated DC power supply with a positive output rail referenced to ground, electron flow travels from the more negative potential (ground) toward the positive potential (TP5), ensuring electrons consistently flow from the grounded end through the load resistor to point TP5.

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