A circuit with 120 volts and 2 amperes draws how much power?

A circuit with 120 volts and 2 amperes draws how much power?

• A. 60 W
• B. 120 W
• C. 480 W
• D. 240 W

Answer: (D)

Power equals voltage times current, P = V × I. With 120 volts and 2 amperes, P = 120 × 2 = 240 watts. The other numbers would come from different currents at the same voltage (0.5 A gives 60 W, 1 A gives 120 W, 4 A gives 480 W). Since the circuit draws 2 A, 240 watts is the correct power.

Power equals voltage times current, P = V × I. With 120 volts and 2 amperes, P = 120 × 2 = 240 watts. The other numbers would come from different currents at the same voltage (0.5 A gives 60 W, 1 A gives 120 W, 4 A gives 480 W). Since the circuit draws 2 A, 240 watts is the correct power.