It costs 2.6 cents to charge a car battery at a voltage of12 V and a current of

ID: 1666910 • Letter: I

Question

It costs 2.6 cents to charge a car battery at a voltage of12 V and a current of 15 A for 120 minutes. What is the cost of electrical energy per kilowatt-hour atthis location? Express your answer indollars perkilowatt-hour. Express your answer using two significantfigures. It costs 2.6 cents to charge a car battery at a voltage of12 V and a current of 15 A for 120 minutes. What is the cost of electrical energy per kilowatt-hour atthis location? Express your answer indollars perkilowatt-hour. Express your answer using two significantfigures. Express your answer indollars perkilowatt-hour. Express your answer using two significantfigures.

Explanation / Answer

It costs 2.6 cents to charge a car battery at a voltage of12 V and a current of 15 A for 120 minutes. What is the cost of electrical energy per kilowatt-hour atthis location?
power=V*i=12*15=180w=180j/sec
energy per 1 hour=180*3600=648000J
in kwh=648kwh
the charge per 648kwh=2.6/100dollar
so the charge=4.01*10-5 dollars

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It costs 2.6 cents to charge a car battery at a voltage of12 V and a current of

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