Which is the best description of a watt?
A. The amount of power consumed when a one-volt dc power source causes a current of one amp to flow in a circuit.
B. The amount of power consumed when a one-volt ac power source causes a current of one amp to flow in a circuit.
C. The amount of voltage consumed when a one-volt dc source causes a resistance of one ohm in a circuit.
D. The amount of current consumed when a one-volt ac source causes a current of one amp to flow in a circuit.
Answer: A
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