An air conditioner draws 14 A at 220-V ac. The connecting cord is copper wire with a diameter of 1.758 mm.
a) how much power does the air conditioner draw?
b) If the total length of wire is 10m, how much power is dissipated in the wiring?
c) If no. 12 wire, with a diameter of 2.053 mm, was used instead, how much power would be dissipated?
d) assuming that air conditioner is run 15 h per day, how much money per month (30 days) would be saving by using no. 12 wire? Assume that the cost of electricity is 12 cents per kWh.