Marine Electrical Systems USCG Question #556 (Set 19)

Four lamps are connected in parallel in a single circuit. If one of the lamp burns out, what will happen to the other lamps?

Official USCG Answer & Rule Citation

Correct Answer: Option C — burn with their original intensities

Parallel circuits maintain independent operational branches across shared voltage rails. If one lamp burns out, the remaining lamps continue to experience full source voltage and burn with their original uncompromised intensities.

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