What is the wattage of a heating element drawing a current of 30 amperes, at 120 volts?
Official USCG Answer & Rule Citation
Correct Answer: Option A — 3600 watts
Electrical power is calculated using Joule's Law formula P = V * I. Multiplying the applied voltage of 120 volts by the current draw of 30 amperes yields 3,600 watts of total active power consumed by the heating element.
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