How much does it cost to operate a 1.0-W electric clock for a year if electricity cost $0.05/k Wh?
I think the answer is =$0.44 a year with the calculations of 1.01*24hrs*365=8,760Whr/1000kw = 8.76kWh 8.76 kWh * 0.05 = 0.44 a year. Is this correct?
Yes, but the 1.01 should be 1.00 watts. It makes little difference.
Ty!
Yes, your calculations are correct. To determine the cost of operating a 1.0-W electric clock for a year, you need to calculate the total energy consumption in kilowatt-hours (kWh) and then multiply it by the cost per kWh.
First, you need to calculate the energy consumption per day. Since the clock operates at 1.0 watt, you can convert it to kilowatts by dividing it by 1000:
1.0 W ÷ 1000 = 0.001 kW
Next, you need to find the energy consumption per hour by multiplying it by the number of hours in a day (24):
0.001 kW * 24 hours = 0.024 kWh
To find the energy consumption for a year, you multiply it by the number of days in a year (365):
0.024 kWh * 365 days = 8.76 kWh
Finally, you multiply the total energy consumption (8.76 kWh) by the cost of electricity per kWh ($0.05):
8.76 kWh * $0.05/kWh = $0.44
So the cost to operate a 1.0-W electric clock for a year, with electricity costing $0.05/kWh, is $0.44.