TP 21.22

Given: I = 2.30 A

DV = 120 V

Cost = $0.075 per kilowatt-hour

Find: Cost of one hour?

P = I DV = (2.30 A)(120 V) = 276 W = 0.276 kW

Cost of one hour = (0.276 kW)(1.00 hour)($0.075 per kW-hour) = $0.0207