How much energy does an electric hair dryer use if it draws 8.3 amps of current when using 120 volts for 5.0 minutes?

First find the dryer’s power: 120 V × 8.3 A = 996 W, or 0.996 kW. Five minutes is 5/60 = 1/12 hour, so the energy used is 0.996 kW × 1/12 h = 0.083 kWh. The correct choice is 0.083 kWh.

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