The approximate Load of laptop is 100 Watts and if used 1 hour daily it will use approximate 3 units/ month
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.
KWH stands for kilowatt hour, meaning a thousand watts used for an hour. In terms of, for example, the familiar 60 watt light bulb, you would need (just under) 17 such light bulbs operating for an hour to consume 1 KWH.
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.
Depends on the size of the aircon.
it will take more than100 watts until the filament reaches operating temperature so perhaps a second to get as low as 100 watts . then 100Watts there after until 300 hours pass then 0 watts if you mean 100Watt hours then the answer is 1 hour and the hour will cost about a penny
5.5 watts is 0.0055 kilowatts. in one hour the equipment uses 0.0055 kilowatt-hours.
A Kilowatt hour is 1000 watts per hour. A 50 watt bulb will use just 50 watts per hour. Therefore over 12 hours the 50 watt bulb will use 50*12 watts = 600 watts or 0.6 of a kilowatt hour.
A 50 w bulb consumes 50 w all the time it is running. In one hour it consumes 50 watt-hours. In 20 hours it consumes 1000 watt-hours, that is 1 kilowattt-hour or 1 unit on your electricity bill.
The question contradicts itself. the bulb can not be both 400 watts and 14.5 kilowatts (14500 watts) at the same time. Supposing it's a 400 watt bulb, in 24 hours it uses 0.4 times 24 units, in other words 9.6 units (1 unit is a kilowatt-hour). Now suppose the cost is 14.5 p per kilowatt-hour or unit, the cost is 139.2 p or £1.39.
In North America it is kilowatt/hour. A kilowatt is 1000 watts. To find out how much your utility company charges you per kilowatt/hour, look on your utility bill. On my bill it is .08 cents for every kilowatt/hour that I consume.
The fridge consumes the watts. My fridge is a normal one, it consumes 500 watts for 2 minutes every hour.
The average home fluorescent lamp consumes 40W of power. Running for one hour it will consume 0.04 KWh. Units of electricity are charged per Kilowatt hour.
The bulb takes a power measured in watts. Each hour it uses energy equal to that number of watts, as watt-hours. A 60 W bulb uses 60 watt-hours in 1 hour, or 600 watt-hours in 10 hours.
A kilowatt is 1,000 watts. A 60 watt bulb uses 60 watts in an hour. So, in half an hour it uses 30 watts. Now if a kilowatt costs 20 cents, what does 0.03 kilowatt cost?
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.
0.04 kilowatts one kilowatt is 1000 watts
It varies tremendously depending upon the size of the fan and the power of the motor. The best way to answer your question would probably be to look at the back of the fan, or on the bottom. It usually will tell how many watts the fan draws. If it only tell amps and volts, remember that watts = amps X volts. Remember that watts does not have a time component; so to say that… Read More
The standard unit of measurement of electrical consumption is the kilowatt-hour (KWH). It it simply the kilowatts multiplied by the hours. And a kilowatt is 1,000 watts. So, 100 watts x 24 hours = 2400 watt-hours, or 2.4 KWH.
good question A KWH is 1000 watts of power used for one hour. A 100 watt bulb would need to be on for 10 hours to use 1 KWH.
That bulb is 100 watts or 0.1 kilowatts so it uses 0.1 kilowatt-hour of energy each hour, which costs about £0.015
These are three different type of units; the kilowatt hour is a measure of energy, kilowatt a measure of power and the amp a measure of current. or That is an easy one. If you plug a 100 watt bulb into a 110 volt outlet you will draw 0.91 amps. Watts=voltage times Amperes. The draw on the circuit will be 0.1 kiliowatts (1000 watts is one kiliowatt) If you leave this bulb on for ten… Read More
A light bulb of 60 watts if we leave it on for an hour it will use 60 watt hours or .06 kWh.
When 1000 watts of power is consumed over a period of 1 hour, the consumption is 1 kw/h.
There is no such thing as 'power consumption', so a lamp cannot consume any kilowatts over any period of time. It is energy that is consumed; power is simply the rate at which energy is consumed. Energy consumption is measured in joules or, by electricity companies, in kilowatt hours (not kilowatts per hour!). So, a 1000-W lamp will consume 1 kW.h over the period of one hour. You can think of 'power' being equivalent to… Read More
5 HP MOTOR WOULD CONSUME ENERGY OF 1342800 JOULES IN AN HOUR. EXPLANATION :- 1 HP = 746 WATTS THEREFORE 5 HP = 3730 WATTS. = 373O Joules/sec (since 1WATT= 1 Joules/sec) =3730 x 3600 = 13428000 Joules/ hour.
Watts aren't consumed per hour, as Watts are defined as joules per second. The wattage of a described unit would be 12 times .5, or 6 watts.Ê
Answer Appliances, such as your lamp, don't 'consume' power; they consume energy. Their power rating merely tells you the rate at which they consume energy. '100 watts' means that your lamp consumes 100 joules of energy every second it is operating. So, over a period of one hour, your lamp will consume 100 x (60 x 60) = 360 000 joules of energy. To complicate matters, however, electricity companies usually measure the energy their customers… Read More
An electrical watt is a measure of power. A 40 watt light bulb uses 40 watts of electrical power. It has a relative measure of twice the light output of a 20 watt bulb and one half the output of an 80 watt bulb. A 40 watt bulb uses 40 Joules of energy each second, or 40 watt-hours of energy each hour. In 1000 hours it uses 40 kilowatt-hours or Units of electrical energy.
Light bulbs have various ratings. They are rated in Watts.
Yes, that's the question. A 1000 Watt light uses... 1000 Watts. A 500 Watt light uses, you guessed it... 500 watts. It depends on the size of the bulb. ACTUALLY... Watts are a measure of power, Joules are the measure of energy - you can simply convert watts/hour or watts/second to joules but to say that a 1000 Watt light bulb uses 1000 watts is a ridiculous thing to say =D watts are Wh-1 or… Read More
Volts is the unit of Voltage, denoted by 'V'. Watts is the unit of power consumed, denoted by 'W'. As per Indian Standards we are available with 230V single phase connections. And the incandescent bulbs calibrated with some 40W, 60W, 100W shows how much power will it consume for an hour of consumption. Means a 40W bulb will draw 40W power on lighting it for an hour. Hope now its all clear with Volt and… Read More
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 multiply the power in kilowatts by the time the bulb is on for (in hours): 0.1kW x 10h = 1 kWh a 100 watt bulb uses 100 watts of power. In ten hours it uses 100x10 watt-hours, or 1 kilowatt-hour. A… Read More
How much normal running current is required by a 4 star refrigerator claiming to consume 399 units per year?
That is a believable claim. 399 units per year or 1.09 units per day is an average power of 0.045 units per hour, equal to 45 watts. In practice the refrigerator pump probably take about 5 times as much when it's running but the thermostat keeps it turned off most of the time. My ordinary kitchen refrigerator has used 1.3 units in 3½ days, an average of 15 watts.
. . runs at a constant 60 watts of electric power. In an hour it uses up 60 watt-hours of energy.
A simple electrical device is a 60 watt light bulb. The bulb is consuming 60 watts of electricity from the moment you turn it on. If you keep that light bulb on for 10 hours the power used is 60 watts x 10 hours = 600 watts of power. Electricity is sold in Kilowatt Hours. A Kilowatt is 1000 watts of power. Depending on the state you live in, it sells for 7 to 18… Read More
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
It takes 60 watt-hours. Same as lighting a 1-watt bulb for 60 hours; or 60 bulbs of 1 watt each for 1 hour. You get the idea. Notice the units: watt-hours, not watts. Watt is a unit of power, watt-hour is a unit of energy. 1 watt-hour = 0.001 kWh (kilowatt-hour) = 3600 joules = 860 calories = 3.4 BTU.
The number of watts is the same in one second, one hour, or one century. A watt is a unit of power, not a unit of energy. 1 hp = 746 watts. In one hour a 746-watt appliance would use 746 watt-hours or 0.746 kilowatt-hours of energy.
People consume electrical energy to help them in their daily lives, with lighting, cooking, heating and for electronic devices like TVs and computers. Electrical energy is billed to customers as Units. A Unit is a kilowatt-hour, in other words 1 kilowatt (1000 watts) of power used for 1 hour, or 100 watts used for 10 hours, etc. The cost of a unit is approximately £0.15.
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
A unit (as mentioned on the electricity bills) is represented in kWH or Kilowatt Hour. This is the actual electricity or energy used. If you use 1000 Watts or 1 Kilowatt of power for 1 hour then you consume 1 unit or 1 Kilowatt-Hour (kWH) of electricity.
You can't convert that. Those units measure different things.
A light bulb has an efficiency of 10%. A 40 watt light bulb gives off 4 watts of light. That leaves 36 watts of heat. Now you can look up the formula to get the conversion factor to joules so you can get the right answer for your homework.
One Unit of electrical energy is the result of 1000 watts for one hour, or 100 watts for 10 hours. Multiply the kilowatts by the hours to get the kWh or units.
Wattage is a direct measure of how much power is used in an hour. Ex.A 60 Watt light bulb uses 60 watts of power in an hour. Power at your meter is measured in Thousands of Watts or Kilowatts.
Answer A watt-hour is a measure of watts * time. One watt-hour is the amount of energy used by something drawing one wattbeing used for one hour. The kilowatt hour(symbol kW·h, kW h or kWh) is a unit of energy. Energy delivered by electric utilities is usually expressed and charged for in kWh. Note that the kWh is the product of power in kilowatts multiplied by time in hours; it is not kW/h. Also note… Read More
If there are ten 16 watt LEDS instead of ten 100 watt incandescent bulbs, that would save ten times 84 watts, 840 watts, which is 0.84 kWh or units for each hour they are all switched on.
A 250 watt light bulb takes 250 watts of power. The energy it uses (that you pay for) is measured in watt-hours or kilowatt-hours. A 250-watt bulb running for 4 hours uses 1 kilowatt-hour.
There is no such thing as 'watts per hour'. You may be thinking of 'watt hours', which is a unit for measuring energy? If so, since a kilowatt hour is equal to a 'unit' (short for 'Board of Trade Unit'), then a megawatt hour is equal to a thousand units.