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# How many kilowatt-hours does a 500 watt microwave use in 1 hour?

A kilowatt hour is equal to the amount of electrical energy  consumed at a rate of one kilowatt. 1 kilowatt hour is the same as  1000 watt-hours.    So using that pri (MORE)
In Algebra

# How many kilowatt-hours does a 100 watt light bulb use in 10 hours?

First let us convert the power of the bulb into kilowatts. A kilowatt is 1000 watts. We have one tenth of that. So 100W = 0.1kW To work out the kilowatt hours we simply mu (MORE)

# How many watts are in a kilowatt hour?

      Answer   A watt-hour is a measure of watts * time. One watt-hour is the amount of energy used by something drawing one watt being used for one hour.   (MORE)

# How many kilowatt hours does a tv use?

Check the power rating of the TV, and multiply by how many hours you used it for. Say if it uses 180W and you have it on for 4 hours, you will have used 180W * 4 = 720 watt-ho (MORE)
In Science

# How many kilowatts an hour does a microwave use?

It depends what the power rating of the appliance is. A 500 watt microwave will use half a kilowatt if it's run for an hour on full power. A 750 watt unit will use 3/4 of a un (MORE)

# How many kilowatts are in 1 kilowatt hour?

That's like asking "How many miles per hour are in one mile ?" Kilowatts is a unit of power ... the rate of using energy. Kilowatt-hours is a unit of energy. You can't con (MORE)

# When operating a high efficiency nat gas forced air furnace and heat pump at what cost ratio or percent of gas therms to kilowatt hours does it make more sense to use the high efficiency furnace only?

There are 3413 btu per kWh and 100,000 btu per therm of natural gas, these are constants. In order to give a correct answer the exact efficiency rating of the high efficiency (MORE)

# How many calories of heat may be obtained from 3-kilowatt hours of electrical energy?

Well, I google the convertion table on calculateme.com and I got   1 kilowatt hour = 860 420.65 calories  So when you have 3 kilowatt hours you get 2579535.6835769564 cal (MORE)

# How many kilowatts does a philips 90 watt floodlight use in a 12 hour period?

You need to understand the difference between power - as in  watts - and energy - as in Watt hours.  Watts/kiloWatts only tells you what it's doing at the moment, at  that (MORE)

# How many kilowatts does 3 HP well pump use per hour?

Kilowatts and horse power are both measures of power and they must  be multiplied by time to get units of energy.    1 HP is 746 watts, so a 3-HP pump works at 3 x 746 (MORE)