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A light bulb has 0.25 A of current using a voltage of 120 V. What is the power rating for this bulb?
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A light bulb has 0.25 A of current using a voltage of 120 V. What is the power rating for this bulb?

User Frederick Cheung
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15 votes
15 votes

We can't tell what RATING is printed on the package of bulbs, but right now, the bulb is dissipating IxE= 30 watts of heat and light.

User Pietro Saccardi
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