30 minutes is 0.5 hours. 1 kilowatt = 1000 watts, so divide both sides by 1000 and you get .001 kilowatts = 1 watt So 8 watts x 30 minutes = .008 kilowatts x 0.5 hours = .004 kilowatt hours.
To calculate the kilowatt hours (kWh) used by a 30 watt light bulb in 8 hours, we first convert the power to kilowatts: 30 watts = 0.03 kilowatts. Then, multiply this by the time in hours: 0.03 kW * 8 hours = 0.24 kWh. So, 0.24 kWh are used to light a 30 watt light bulb in 8 hours.
Electrical energy is typically measured in kilowatt-hours (kWh). This unit represents the amount of energy consumed by an electrical device operating at a power of one kilowatt for one hour.
Power consumption is measured in kilowatt hours.
To calculate the electricity bill for a house per month, multiply the total kilowatt-hours used by the cost per kilowatt-hour. The total kilowatt-hours used can be found on your electricity bill or by monitoring your meter. The cost per kilowatt-hour is provided by your utility company.
8500 BTU is equivalent to 2.49 kWh (kilowatt-hours).
35,000 BTU = 10.2574875 kilowatt hours.
1 kilowatt = 1,000 watts 6 kilowatts = 6,000 watts 6 kilowatt-hours = 6,000 watt-hours
Electric energy usage on your electric bill is measured in kilowatt-hours (kWh). This indicates the amount of electrical energy consumed over a period of time.
50 watts is 0.05 kilowatts, so in 24 hours it uses 0.05 x 24 kilowatt-hours, or 1.2 kilowatt-hours of energy.
29.4 x 10 = 294 watt hours or 0.294 kilowatt hours.
The average yearly electrical consumption around the world for those areas that have electricity is 3,500 kilowatt hours. In the United States the average is almost 11,000 kilowatt hours.
300 watts 0.3 kilowatts; 0.3kilowatts X 8 hours 2.4 kilowatt-hours
30 minutes is 0.5 hours. 1 kilowatt = 1000 watts, so divide both sides by 1000 and you get .001 kilowatts = 1 watt So 8 watts x 30 minutes = .008 kilowatts x 0.5 hours = .004 kilowatt hours.
To find kilowatt-hours (kWh) from kilowatts (kW), you need to multiply the power in kilowatts by the time in hours that the power is used. The formula is: kWh kW x hours. This calculation will give you the total energy consumed in kilowatt-hours.
divide by 100
First find your watt hours and by moving the decimal place change to kilowatt hours. Then multiply that answer by .07 cents per kilowatt hour.