Excellent video. Love the analogies and illustrations. I watched many videos on this topics. Yours is the first one that finally it got to sink into the brain. Thank you.
Energy and power are closely related but are not the same physical quantity. Energy is the ability to cause change; power is the rate energy is moved, or used.
I am as confused as apparently many commentators here. But this explanation made sense to me. So if we have a light bulb of 100 W or a generator of say 30 Megawatts they don't produce or consume anything in terms of watt hours. It is only when they are used an hour or any other time period they can be then measured in terms of that time period. So they have a potential for what ever that is, 100W or 30MW and it just depends on how much time you run it that you get the watt hours.
and the hour is not the important thing except that it is convenient to use some standard of measurement. Might as well be a second, or a year, or a fraction of a day or whatever. Just more convenient to talk about hours since everyone else is doing the same thing. Obviously it is rare that you use something for exactly for one hour so you just say it was "0.5 kWh" when half an hour or "24 kWh" when it was a full day (and also you multiply it with the power so 2 hours of 100 watts is 200 watts at the rate of 100 watts per hour)
You don't get it What you using nobody knows Is there are weight scale inside of the meter and a clock - No To use is kw per sec Is 3mln Joules per sec Means 1 j is 100g to 1 m high 1000 j is 100 kg 1 m 10000 is 1 ton 1000000 joules 100 ton to 1 m 3 mln joules 300 ton to 1 m 1 kw is to pick up 300 ton to 1 m 3500 кw is to pick up to 3.5 km 300 ton You put it this per sec Become energy per sec And you can see you pick your house many times to the sky Every hour To supply you with a bunch of nothing Do not respond with normal logic
shouldn't it be ..... 1 W.h = 3600 J 1 KW.h = 3,600,000 J as both sides of every equations have energy units and to convert power(P) to energy(E) or E to P we must have a certain period of time to multiply or divide by .... not just using the number (3,600) right !
practical help: what is a difference between these two companies 1. Each block is equivalent to 50 kilowatt hours (kWh) of electricity and is available for $4.92 net cost per month. So when you subscribe to two blocks, you’re supporting 100 kWh of solar energy for only $9.84 per month or just 33 cents per day.versus Versus 2. The initial credit rate on your bill will be approximately $0.04 per kilowatt-hour (kWh) and will remain at that level for the first 36 months. Starting with the 37th month of continuous enrollment, the rate will increase 1.5% annually; A 1kw subscription to solar energy will cost less than $8.35 a month** Please help what is the difference between these two offers?
yea, 100 watts is already energy per second. If you consumed 100 Watt hours, that means you consumed 100 watts for 1 hour, which is equal to 100 joules per second for 3600 seconds, or 360000 joules
this wouldn't be such a hassle if we hadn't invented the commercial unit of energy called the kilowatt-hour. What does "hour" have to do with diddly? Oh yeah, it's 3600 seconds. Why 3600? Because 60 x 60, of course. Why 60? Uhhh, I don't know. Geez, guys and gals, just express yourselves in joules.
Very smart boy 💡. I only needed info on kwh but he went nuts and explained everything lol
you straightened me out! that is amazing. thanks a lot
Excellent video. Love the analogies and illustrations. I watched many videos on this topics. Yours is the first one that finally it got to sink into the brain. Thank you.
You are awesome! I was so confused by those two units. But you sir explained it perfectly. Thank you very much! :-)
Thanks for explaining, I needed that!
This was the best video I've watched on this!
Thank you!! That helped a lot!!
Very clear, well explained , many thanks.
Great video man, thanks a lot!
Excellent class! I have learnt a lot, thank you.
awesome video
very nice comparisons
This was very helpful. Well explained. Thank you!
Great video!
Great teacher, thank you!
Thanks Prof.
Good explanation. I think it also helps to explain that a watt is equal to a joule per second
well explained THANK YOU
Genius video. I’m so impressed with the weightlifting analogy and what a great orange shirt.
Good Video
Energy and power are closely related but are not the same physical quantity. Energy is the ability to cause change; power is the rate energy is moved, or used.
muy explicativo, gracias
Excellent video! very clear information. Thank you so much!
I am as confused as apparently many commentators here. But this explanation made sense to me. So if we have a light bulb of 100 W or a generator of say 30 Megawatts they don't produce or consume anything in terms of watt hours. It is only when they are used an hour or any other time period they can be then measured in terms of that time period. So they have a potential for what ever that is, 100W or 30MW and it just depends on how much time you run it that you get the watt hours.
and the hour is not the important thing except that it is convenient to use some standard of measurement. Might as well be a second, or a year, or a fraction of a day or whatever. Just more convenient to talk about hours since everyone else is doing the same thing. Obviously it is rare that you use something for exactly for one hour so you just say it was "0.5 kWh" when half an hour or "24 kWh" when it was a full day (and also you multiply it with the power so 2 hours of 100 watts is 200 watts at the rate of 100 watts per hour)
Thanks
GANDA NITO!
Does the hour have to be a straight hour?
Why not just use Joules for energy consumption? Since Watts = Joules/second, why complicate it and add hours into the mix?
+isoconverge this is exactly my question!
+isoconverge I think this is a trend the electrical companies popularized. I physics class we were always told to try and stick to joules.
I asked my thermo teacher and he said companies use this because numbers are much smaller.
Just use giga or even tera joules instead.
isoconverge and
i want power consummation details.
thanks, you've saved my life in the physics examination xD
Ovo Rocky are you alive in 2017
I have a question.
If it says 3500 kWh, does that mean that I am using 3500 Kilowatt per hour and that for 8760 hours (1 year)?
You don't get it
What you using nobody knows
Is there are weight scale inside of the meter and a clock - No
To use is kw per sec
Is 3mln Joules per sec
Means
1 j is 100g to 1 m high
1000 j is 100 kg 1 m
10000 is 1 ton
1000000 joules 100 ton to 1 m
3 mln joules 300 ton to 1 m
1 kw is to pick up 300 ton to 1 m
3500 кw is to pick up to 3.5 km 300 ton
You put it this per sec
Become energy per sec
And you can see you pick your house many times to the sky
Every hour
To supply you with a bunch of nothing
Do not respond with normal logic
good job, basically
1W = 1 j/s
1Wh = 1 j/s * 1h
1h = 3600 seconds
1Wh = 1 j/s * 3600s
1Wh = 3600 j
1kWh = 3,600,000 j
+jayyfan Almost right.
1Wh = 3,600 j/s
1kWh = 3,600,000 j/s
shouldn't it be .....
1 W.h = 3600 J
1 KW.h = 3,600,000 J
as both sides of every equations have energy units
and to convert power(P) to energy(E) or E to P we must have a certain period of time to multiply or divide by .... not just using the number (3,600)
right !
Gold report
Why write 100 Wh and 1 hour. Is the unit for time hour or h. consistency.
practical help: what is a difference between these two companies 1. Each block is equivalent to 50 kilowatt hours (kWh) of electricity and is available for $4.92 net cost per month. So when you subscribe to two blocks, you’re supporting 100 kWh of solar energy for only $9.84 per month or just 33 cents per day.versus Versus 2. The initial credit rate on your bill will be approximately $0.04 per kilowatt-hour (kWh) and will remain at that level for the first 36 months. Starting with the 37th month of continuous enrollment, the rate will increase 1.5% annually; A 1kw subscription to solar energy will cost less than $8.35 a month** Please help what is the difference between these two offers?
i'am french it's a good thanks
kool! look at the storage also as mice, small rat, and big rat eating a loaf of bread
My phone was just about to die when he used the battery example
If the plant is operating continuously at 30 MW, it would produce 30 MWh every hour.
I don't get it!!!!!!!!!!!!!!
you said the bulb will consume 100 watt of power.....i'm confused that will the bulb consume 100 watt per second???? please explain
Harshith SV it should be Joules/second=watt
yea, 100 watts is already energy per second. If you consumed 100 Watt hours, that means you consumed 100 watts for 1 hour, which is equal to 100 joules per second for 3600 seconds, or 360000 joules
this wouldn't be such a hassle if we hadn't invented the commercial unit of energy called the kilowatt-hour. What does "hour" have to do with diddly? Oh yeah, it's 3600 seconds. Why 3600? Because 60 x 60, of course. Why 60? Uhhh, I don't know. Geez, guys and gals, just express yourselves in joules.
The weight lifting analogy is terrible. Who came up with this?
Is exactly right
Not clear at all
Your Weight lifting calculations are incorrect
How so?
the video sound.... makes me want to stick forks in my left ears...
totaly lost with weightlifting ...???
EUREKA!!
You are lost
Check your books again
Much a say about nothing. Stick to the point instead of bringing other examples.
you lost me as soon as i saw your face man...sorry...
shut up dude