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Electricity and Magnetism

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Cost to Operate an Air Conditioner

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You decide to do an energy audit to determine how much it costs to power your home electronics. You try to determine the cost of running your air conditioner on a typical summer day, but the label indicating the power rating of the AC is not legible.

You can​ determine that the AC draws about 12 A of current. Additionally, you know your household air conditioner runs on a 220 Volt outlet and is on an average of 6 hours per day during the summer. According to your electric bill, you are charge 12 cents per kWh (kilowatt-hour).