Marine Electrical Systems USCG Question #358 (Set 12)

How are the line losses in a distribution circuit kept to a minimum?

Official USCG Answer & Rule Citation

Correct Answer: Option B — using higher voltage and lower current

Line losses in distribution circuits are proportional to current squared times resistance ($I^2R$). Transmitting power at higher voltages allows a proportional decrease in current for the same power level, thereby minimizing resistive $I^2R$ power losses across shipboard cable runs.

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