A 500-W device is connected to a 120-V ac power source. What rms current flows through this device?

Name: A 500-W device is connected to a 120-V ac power source. What rms current flows through this device?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The rms current can be calculated using the formula P = VI, where P is the power (500 W) and V is the voltage (120 V). Solving for I gives I = P/V = 500 W / 120 V = 4.17 A, which rounds to 4.2 A.

A 500-W Device Is Connected to a 120-V Ac Power