If a device operates at 120 V and current is 2 A, what is its power?

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Study for the Mechatronics End-of-Pathway (EOP) Test. Explore flashcards and multiple-choice questions, each with hints and explanations. Prepare confidently for your exam!

Multiple Choice

If a device operates at 120 V and current is 2 A, what is its power?

Explanation:
Power in an electrical circuit is the rate at which energy is transferred, and it equals the product of voltage and current. At 120 volts and 2 amperes, the power is P = V × I = 120 × 2 = 240 watts. So the device dissipates 240 W. The other numbers would require different voltage or current values (for example, 120 W would come from 120 V at 1 A or 60 V at 2 A, and 360 W would need 120 V at 3 A).

Power in an electrical circuit is the rate at which energy is transferred, and it equals the product of voltage and current. At 120 volts and 2 amperes, the power is P = V × I = 120 × 2 = 240 watts. So the device dissipates 240 W. The other numbers would require different voltage or current values (for example, 120 W would come from 120 V at 1 A or 60 V at 2 A, and 360 W would need 120 V at 3 A).

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