An electrical component is connected across a 120 volt 60 hertz AC supply. What is the current drawn by the component if the impedance is 200 ohms?

Correct Answer: Option B — 0.60 amperes

Applying Ohm's law for alternating current, current equals voltage divided by impedance ($I = V / Z$). Dividing 120 volts by 200 ohms yields 0.60 amperes. Title 46 CFR Subchapter J and IEEE 45 emphasize these fundamental calculations for sizing marine electrical distribution components.