SOLUTION: It takes a 60-watt bulb about 16.6 hours to use 1kWh of electricity. That is about 2.5 times as long as it takes a 150-watt bulb to use 1hWh. How long does it take a 150-watt bul
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Question 23094: It takes a 60-watt bulb about 16.6 hours to use 1kWh of electricity. That is about 2.5 times as long as it takes a 150-watt bulb to use 1hWh. How long does it take a 150-watt bulb to use 1kWh? Answer by rapaljer(4671) (Show Source):
You can put this solution on YOUR website! Higher wattage means that it takes LESS time to consume the electricity. If the 60 watt bulb takes 2.5 times as long to use electricity, then the 150 watt bulb will use the same electricity in 1/2.5 times as long. If it takes 16.6 hours for a 60 watt bulb to use 1kWh, then the 150 watt bulb will take hours.
No Extra Charge: Notice the answer in the check is 996 watt-hours, which is almost 1000 watt-hours. Now, what is the word for 1000? Isn't it "kilo"? In other words "kilo-watt-hours"!! Get it??? And why is it 996 watt-hours, which is APPROXIMATELY 1000 watt-hours, instead of EXACTLY 1000 watt-hours or one kilo-watt hour? Answer: Because in the problem it says that "It takes a 60-watt bulb ABOUT 16.6 hours to use 1kWh of electricity," which is rounded off! If you used (60 watts)*(16.6666666. . . hours), it would come out EXACTLY 1 kilowatt hour!!
