You are cooking breakfast for yourself and a friend using a 1160 W waffle iron a

Question

You are cooking breakfast for yourself and a friend using a 1160 W waffle iron and a 500 W coffeepot. Usually, you operate these appliances from a 110 V outlet for 0.500 h each day. (a) At 12 cents per kWh, how much do you spend to cook breakfast during a 30.0 day period? $ (b) You find yourself addicted to waffles and would like to upgrade to a 2320 W waffle iron that will enable you to cook twice as many waffles during a half-hour period, but you know that the circuit breaker in your kitchen is a 20 A breaker. Can you do the upgrade? Give the current that this new waffle iron (along with the coffee pot) draws to support your answer. I = A

Explanation / Answer

a)(1200+530)*0.5*10^-3*12 *30=$3.11 b)No we can't upgrade because the maximum power rating that can be used=20*110=2200W

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