Household light bulbs have a given power rating, and they operate at 120 V. Which one of the following equations most directly provides the current rating of these light bulbs? A. P = I2R B. P = IE C. P = E2/R D. I = P/E E. None of the above

The correct answer is: D. I = P/E

The power of a circuit is the product of the voltage and the current. The voltage of a household light bulb is 120 V, and the power rating is given. Therefore, the current rating of the light bulb can

Option A is incorrect because it does not take into account the voltage. Option B is incorrect because it does not take into account the current. Option C is incorrect because it does not take into account the resistance. Option E is incorrect because it is not one of the equations that can be used to calculate the current rating of a light bulb.