Physics
Electricity and Magnetism
Figure Q28.19 shows a series combination of three lightbulbs, all

Figure Q28.19 shows a series combination of three lightbulbs, all rated at 120 V with power ratings

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Figure Q28.19 shows a series combination of three lightbulbs, all rated at 120 V with power ratings of 60 W, 75 W, and 200 W. Why is the 60-W lamp the brightest and the 200-W lamp the dimmest? Which bulb has the greatest resistance? How would their intensities differ if they were connected in parallel?

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At their normal operating temperatures from P AV R the bulbs present resistances RAV120 V 240 Q...View the full answer

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Question Posted: Apr 16, 2010 10:26 PM

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