Electric Circuits Homework Help

AI Thread Summary
To calculate the cost of running a 1800 Watt electric oven for 7 hours at a rate of 10 cents per kilowatt hour, first convert 1800 Watts to 1.8 kilowatts. Multiply 1.8 kilowatts by 7 hours to get 12.6 kilowatt hours. Then, multiply 12.6 by 10 cents to find the total cost, which is 126 cents. The initial confusion arose from miscalculating the final answer as 1.26 cents instead of the correct amount. Proper calculations confirm the cost is indeed 126 cents.
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Homework Statement


What does it cost in cents to leave a 1800 Watt electric oven on for 7 hours? Assume that you pay 10 cents for every kilowatt hour which you use.

Homework Equations


Well i don't know if I am supposed to use P=E/t. i don't know how I am supposed to use it

The Attempt at a Solution


Do i not convert 1800 Watts to 1.8 Kilowatts, then multiply 1.8 by 7 hours..which is 12.6 then by .10 cents, which makes the answer 1.26?
It is incorrect though.Thanks for your help.
 
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Wow nvm, i answered it 1.26 cents instead of 126 cents..-.- thanks anyways
 

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