Electricity
If a light bulb has half the resistance of a 100-w lightbulb what would be its wattage? Assume both bulbs are attached to the same 120-v circuit.
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Asked by
bookragstutor
Last updated by
Jill W
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Using the formula P = V^2/R, the power consumed by the first bulb can be calculated as P = 120^2/72 = 200 watts.