Improper question; change the question so it is either "How many kWh per hour does a computer use?" or "How many kW does a computer use?" The term "kW" means "kWh/h."
On the average, a home computer of current manufacture consumes about 0.25 kWh/h
A computer monitor typically consumes around 25-30 watts of power.
5.5 watts is 0.0055 kilowatts. in one hour the equipment uses 0.0055 kilowatt-hours.
Your question is rather like asking "How many miles per hour do you do in a week?" You don't consume watts over time, it's a measure of how many joules of energy you consume over time.
A typical iron uses 1000 watts all the time the heating element is working. It is controlled by a thermostat so the element might be on for a quarter of the time. In an hour the iron might consume 250 watt-hours or 0.25 of a unit.
A small coffee grinder 100-200 watts.
A computer monitor typically consumes around 25-30 watts of power.
5.5 watts is 0.0055 kilowatts. in one hour the equipment uses 0.0055 kilowatt-hours.
too many About 2 million
Your question is rather like asking "How many miles per hour do you do in a week?" You don't consume watts over time, it's a measure of how many joules of energy you consume over time.
A typical iron uses 1000 watts all the time the heating element is working. It is controlled by a thermostat so the element might be on for a quarter of the time. In an hour the iron might consume 250 watt-hours or 0.25 of a unit.
Watts are units for measuring the rate of energy consumption. So it is meaningless to speak of how many watts something consumes in a length of time. (It would be like asking how many miles per hour a car drives in an hour.)Energy consumption may be measured in kilowatt-hours. A typical microwave consumes 1500 watts, which would be 1.5 kilowatt-hours in one hour.
Power = volts x amps, so your example will be 12 x 0.5 = 6 watts. (500mA = 0.5 amp) Note we don't talk of 'watts per hour', it is just watts. 1 watt = 1 joule per second
A small coffee grinder 100-200 watts.
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One kilowatt hour (kWH) is the amount of power used at the rate of 1000 watts for one hour. Therefore a device of 120 watts running for one hour would consume 120 / 1000 x 1 = 0.12 kWH
1 kilowatt (kW) is equal to 1 kilowatt-hour (kWh) when used continuously for one hour. So, if you use a 1 kW appliance for one hour, it will consume 1 kWh of electricity.
1,000 watts