Marine Electrical Systems USCG Question #559 (Set 19)

What will happen to the total circuit resistance when additional parallel circuits are added to a circuit?

Official USCG Answer & Rule Citation

Correct Answer: Option D — it will decrease, causing an increase in the total load current

Connecting additional loads in parallel reduces equivalent circuit resistance. Lower resistance draws higher total load current from the marine generator per Ohm's Law, requiring careful adherence to IEEE 45 cable ampacity and overcurrent protection standards.

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