0
What is the difference bw kwh and kw why we need to consider kwh reading than kw reading for power consumtions?
Wiki User
∙ 12y ago
KW, or kilowatts, is a measure of instantaneous power. KWH, or kilowatt-hours is the power used over time.
Suppose I have a light bulb. It is a 100 watt bulb. You are going to build a small power station to supply me with power. Now, a 100 watt bulb is 0.1 KW, since 1 KW is the same as 1000 watts. Say you buy a little gasoline generator and some fuel to run it. Lets say you decide to charge me one dollar per KW.
I turn on the light bulb for one minute. You measure 0.1 KW on my meter, so you charge me 10 cents ( $1.00 per KW * 0.1 KW = $0.10). Well, ten cents is not too bad, after all, you only had to supply power (and buy fuel), for one minute.
I turn on the light bulb for a week. You again measure 0.1 KW on my meter, so again, you charge me 10 cents. Do you see a problem with this? KW is simply how much power it takes to light the bulb. It has nothing to do with how long you run it. You will quickly go broke supplying me with power.
So, we need to have something that accounts for the time power is supplied. That's what kilowatt-hours do. If I run my 100 watt bulb for one hour, that's 0.1 KWH. If I run it for 5 hours, that's 0.5 KWH, 100 hours is 10 KWH, and so forth.
Now suppose you again agree to supply me with power. This time though, you decide to charge me one dollar per KWH.
I turn on the bulb for one hour. The KWH is 0.1 KW * 1 Hour = 0.1KWH. You charge me $0.10.
I turn on the bulb for a whole day. The KWH is 0.1 KW * 24 Hours = 2.4 KWH. You charge me $2.40.
Ah, much better. Now, the longer you have to run the generator and supply me with power, the more money you will get. If I change my bulb to a 200 watt, you will need more fuel to run your generator, but you will get more money. If I run the bulb longer, you will also need more fuel, but you will also get more money.
That's the main reason power companies primarily bill for KWH used. For commercial customers, it gets a little more complex, but that's another question!
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is the power difference in 4 AWG then 18 AWG?
Power is the product of amps x volts, it has nothing to do with wire size.
Is it human nature to help others?
No. Consider this. If I give you the power to become invisible. What would you do? Nice things? Hell no.
What is the different between devices and appliances?
The most probable difference between the two: 1. Device - does not consume power 2. Appliance - consumes power
What may be the causes of the difference in specific weights of water taken from different sources?
Poseidon's Power
Is nucear power good 0r bad?
It is essential for life. Without it we would not be here therefore most people would consider it good.
Why is your consort ev 265 power supply reading low current and power?
A Consort EV 265 power supply may be reading low current and power if the capacitors are failing. They will be unable to provide the needed power and operate consistently.
Is a battery consider AC power?
No. A battery is considered to be DC power.
Is pure inductor consumes energy?
Pure inductors consume and produce power, just like other reactive devices. The difference is that the current is not in phase with the voltage, resulting in the waveform of the power being oscillating about zero, with a net mean power of zero. In this "pure" case, the power factor is zero, but that does not mean there is no power - its just that the power "reading" is unsophisticated and not compensating for power factor.
Why is your consort ev265 power supply reading low current and power?
A Consort EV265 power supply will begin reading low current and power during component failure like capacitors and resistors. When the appropriate amount of power is not flowing, readings and power output will fluctuate.
Which one is better MBA or power engineering when you consider the salary?
Power Engineering
What the difference between process piping and power piping?
What the difference between process piping and power piping?
Difference of social power and personal power?
i0pok ,
Why is it that you get a reading of 120 volts from the main breaker but it wont power a lightbulb?
This is the type of reading that you would get with an open neutral.
What has power to consider treaties with foreign countries?
cabneit
What has the power to consider treaties with foreign countries?
cabneit
How can you increase brain picking power?
mostly by reading books..
How do you improve memory power?
reading articles, watching tv.
