Question
A 60 W light bulb at 120 V is left on in your house to prevent burglary, and the power charges 10 cents per kilowatt-hour, how much will it cost to leave the bulb on for 30 days? Please show how to work this
Answers
Henry
30days * 24h/day = 720 Hours
kW * h = (60/1000)kW * 720h =
43.2 kWh
Cost = 43.2kWh * 0.10/kWh = $4.32
kW * h = (60/1000)kW * 720h =
43.2 kWh
Cost = 43.2kWh * 0.10/kWh = $4.32