What is the rms current flowing through a light bulb that uses an average power of 30.0 W when it is plugged into a wall receptacle supplying an rms voltage of 240.0 V

0.125 A

Explanation:

From the question given above, the following data were obtained:

Power (P) = 30 W

rms voltage (Vrms) = 240 V

rms Current (Irms) =?

The power in an electric circuit is given by the following equation:

Power (P) = current (I) × voltage (V)

With the above formula, we can obtain the rms current flowing through the bulb as shown below:

Power (P) = 30 W

rms voltage (Vrms) = 240 V

rms Current (Irms) =?

P = Irms × Vrms

30 = Irms × 240

Divide both side by 240

Irms = 30 / 240

Irms = 0.125 A

Thus, the rms current flowing through the light bulb is 0.125 A

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