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OpenStudy (anonymous):
An electric iron and a hair dryer are both rated at 1kW. Which one of these appliances will cost more to use for ten minutes? a. The electric iron, because a thermostat will switch it on and off b. The hair dryer because the electric iron switches on and off c. The electric iron, because no thermostat will switch on the hair dryer d. The hair dryer, because no thermostat will switch off the electric iron
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OpenStudy (anonymous):
b
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