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An Electric Clothes Dryer Draws 15 a at 220 V

Question 25

Multiple Choice

An electric clothes dryer draws 15 A at 220 V.If the clothes put into the dryer have a mass of 7.0 kg when wet and 4.0 kg dry,how long does it take to dry the clothes? (Assume all heat energy goes into vaporizing water,Lv = 2.26 x 106 J/kg) .


A) 55 min
B) 34 min
C) 20 min
D) 16 min

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