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If it takes 15 minutes to dry your hair with a 1.200 kW hair drier, how much energy is used in drying your hair?
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If it takes 15 minutes to dry your hair with a 1.200 kW hair drier, how much energy is used in drying your hair?

User Stephane Vanraes
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E=Pt where e= energy P= power t= time

E=1.200kiowatt/15 minutes
E={1200/100*1000}/15
E=800 watt/minute
User Chrisaut
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