1. Use the formula Power = current voltage to find that the current drawn by a 1200-W hair dryer connected to 120 V is 10 A. Then, using the method from Exercise 51, show that the resistance of the...

1. Use the formula

Power = current

voltage

to find that the current drawn by a 1200-W hair dryer connected to 120 V is 10 A. Then, using the method from Exercise 51, show that the resistance of the hair dryer is 12 Ω.

2. Show that it costs
3.36 to operate a 100-W lamp continuously for a week if the power utility rate is 20./kWh.