rv-mobile-services.ca/ Watch a dramatic and fascinating two minute documentary of the interrelationship between volts, watts, and amperage as Sunfacts skillfully demonstrates in his lab.
You remind me of those teachers from back in the days, where we were too young to appreciate but come to realize they were the only ones that cared when you got older.
Thanks so much for taking the time to post your comment. Every time someone posts a positive comment, it raises my spirits and makes me appreciate the brotherhood/sisterhood all the more. Cheers!
13 years strong 💪 This is THE best demo of P=VA. 😢 Should be mandatory school curriculum …just so I get it, Amps would be the relative size of the hole? ❤ from 🇨🇦
@writtenlike Watts are the unit of Power Measured in Electronics. Watts or Power is equal to the Current Squared times the Resistance or P = I^2 R Current is what KILLS you.
When I was learning basic electricity, I watched a lot of videos that tried to explain this relationship. This is the one that finally made it click. The only thing I'd add, is that the size of the puncture hole can be thought of as resistance/impedance. So in this experiment, a larger hole (ie lower resistance) in the 12v system, could yield the same current flow in amps as the smaller hole in the 120v system. Thanks for the excellent video and sending me off on my way of electronic tinkering. Aloha!
Nice touch on equating the hole size being inversely proportional to resistance, just like a thicker wire has less resistance and therefore more ability to conduct flow.
@@U-TubeSurfer45 Ha, okay, well think of it this way. Keeping everything else in this video exactly the same, what would happen if he punched a much larger hole in the "12v system" and a tiny little hole in the "120v system"? It's possible that the same amount of water would be coming out of each system. But how is this possible if one is higher voltage? That's where resistance comes into play. A car battery is only a 12v system, but obviously it pulls A LOT of amps....because it is a very low resistance (ie. large hole) circuit. The cell phone charger you plug into your 120v (or 240v overseas) wall outlet pulls WAAAAY less amps, because it's an extremely HIGH resistance (ie. tiny little hole) circuit. Intuitively it works too. A tiny little hole will RESIST most of the water from flowing through it, whereas a larger hole will have LESS RESISTANCE to water flowing through it. The same is true of resistance in a circuit, where less resistance causes more amps (water) to flow, and more resistance causes less amps (water) to flow. It makes sense right? Less resistance = easier to flow. More resistance = harder to flow. So keeping voltage the same, a 120v circuit with 1 ohm of resistance (VERY low) will cause 120 amps to flow. A 120v circuit with 10 ohms of resistance (pretty low, maybe a hair dryer) will cause 12 amps to flow. A 120v circuit with 100ohms of resistance (laptop charger?) will cause 1.2amps to flow....and 1,000 ohms (ie. 1k ohm) will cause 0.12 amps to flow, etc. The same would be true with a water bag weighed down with a big weight. The bigger the hole (ie. less resistance) the more water will flow....smaller hole (ie. more resistance) will result in less water flowing. Again, less resistance = less resistance to flow, meaning more flow. More resistance = more resistance to flow, meaning less flow. Sorry to repeat it multiple ways multiple times, but hopefully one of them clicks. If not, just hang in there and you'll get it! If it did click though, congrats, you just learned Ohm's law the fun way! ALOHA!
@@evankolpack Thank you sir! I'm 18 and i thought i would never understand what volt,amp is.i was really frustared for years.Learning definitions,solving hundreds of problems but still never understood what volt is. I first saw the video then yourr second explanation.It was real fun.Thank you so much. But i have a question. We saw that the smaller the hole the faster the water comes out.The opposite when the hole is bigger. So does it have any impact? i mean the speed of flowing.Or it isnt a thing.
It is VERY upsetting to me that all this is not better explained to ALL PEOPLE as a matter of general knowledge, since our entire civilization runs off of it.
Not very many people are able to say things in a way that makes others understand it. Most teaching is by wrote. Getting others to understand a subject is not something everyone is able to do.
it would be watt seconds, watt hours kilowatt hours, or joules, not watts. Watt is a power unit not an energy unit. In this analogy the water is energy and the rate that it is coming out is current. Power (watts) would be the rate (current) times the pressure (voltage).
I would disagree and say the rate represents power and not current. Constant rate would equate to constant power regardless of if a small hole with a large weight is used or if a large hole is used with a small weight. The current would increase with a larger weight but be unaffected by the hole diameter. The hole diameter would represent the inverse resistance. I agree that the bag volume is best measured in Watt Hours or similar.
You know that 120 volts pushes electricity through the body quite easily, so yeah, that was shocking, but not as much as the time I felt 240 volts rip through my body. That was uniquely memorable. Thanks for your comment.
@@invalidacess yeah what? I had a lightning bolt flash about 4 ft in front of me about chest high on the porch one morning in a extremely heavy rainstorm and it was so forceful that it push me thru the screen door I just walked out as well as made me feel odd in a way I can't really explain other than that since i knew what happened it was obvious to me that my personal physical electrical system was out of whack. And I felt that way for quite some time .Like more than 6 months for sure. One of those feelings you can't quite put your finger on how to describe but it's notable in all day every day life experience. Weird is how I would describe it for lack of another way. Sort of out of body kind of for comparison but not in a way. Very strange.even as im commenting i recall the feeling quite well but not nearly as well as the period of time afterwards. Also it kind of mellowed out at first to a point and then stayed at a certain noticeable point until i one day realized it seemed to no longer be lingering with me. Until now that im thinking about it it im not sure for certain that i cant feel it still more than a decade later in some small way. Hmm ? Makes me wonder. I can tell you that it was an extremely big lightning bolt as the others in the storm were as well. BAM . yeah that's my excuse. If i ever needed one that is . whew 😬⚡😕
THanks for the sweet video 🙏 I grew up in Germany ... i tinkered and renovated a lot, so I've experienced 220 V shocks through my body several times ... It surely wakes you up 😬
I tapped into 240 once and I immediately turned around to ask who just whacked me in the back of my legs with a bat? That was the feeling. It will leave you questioning reality, that's for sure.
Wow, I've always had a difficult time understanding this for some reason, but you sir, have made it extremely clear to understand in less than 2 minutes! Thanks!
Your explanation of volts and amps was good, but the watts was incorrect. The volume of the bag is better represented by coulombs, the unit of charge. Watts is the flow rate times the height it spurts out.
The explanation of voltage was also incorrect. This guy doesn't know electrical principles properly. The entire video is wrong Voltage IS NOT PRESSURE. it's being taught wrong
This is the 3rd video in a row I've seen trying to understand electric current, and after some over produced videos the dude with 2 bags of water and 2 gym weights made me get the concept in 1:47 minutes. I'm impressed, thanks for taking the time to do this.
Great video! My collage professor who is paid more than 100k per year to teach us this is worse than the guy who does it for free. It just goes to show that labors of true love are done for the love of doing it, rather than the reward you receive.
Thank you for this video! I’m a visual learner and after reading explanations and watching RU-vid videos THIS is the best explanation of the three terms. You should do more videos explaining difficult concepts with visual means.
Another way to look at it is in terms of a waterfall. Amperage (current) is the amount or volume of water flowing over the edge. More volume can do more work. Voltage (potential) is the height of the falls. Again, the higher the falls, the greater ability to do work. Multiply amps (volume of water over the falls) by volts (height of the falls) and you get watts (power). If either amps or volts are increased, so do the watts, in a linear fashion.
I teach electrical apprentices and we refer to voltage as “pressure” and “potential” at times. I draw a water flow system with a pump, narrowing of the pipe and pressure gauges but this is an excellent analogy. Thanks.
I just learned something so important in just 1 minute and a half that I never have learned in school. This guy is so fucking precious protect him at all costs
This is awesome. Quintessential RU-vid explainer video. A simple yet compelling elucidation of a concept that one might otherwise find difficult to immediately absorb. This definitely gets the point across in a way that words and diagrams cannot. I really appreciate your visceral distillation of the nearly ethereal force we call electricity. Thank you.
Really helped me to get a better handle on the relationship between the three. Thank you so much for taking the time to help the rest of us better grasp the concept.
Thank you very much from the bottom of my heart. This was probably the absolutely most efficient lesson ive ever learned on something ive been curious in the back of my mind since high school. That analogy should be a standard in school
When I was in my plumbing apprenticeship, an electrician explained electricity through a wire related to how fluid goes through a pipe- voltage is volume, amperage is pressure, resistance is friction, wattage is demand. 15 years later, I think it was a brilliant way to explain it in terms I could relate to and understand.
OMG I've spent years confused but it finally makes sense! I wish I had a science teacher like you in my school days I would have absorbed science knowledge a lot better your teaching style suits my learning style!
54 yts old and uneducated as a 4th grade student. Thank you for the simple explanation that even i could understand proving that im not stupid as stupid can't be fixed. Metaphorically of course
My physics teacher explained electricity to us, like it is water flowing through a pipe to a water wheel: *Volt* is the pressure of the water running through, *Amperage* is the volume of water flowing and *Watt* is how much force the water has to move a water wheel. You could have a water main line to a street (household socket) with high pressure (120V-AC) and relatively high flow (16A) meaning it can move a big wheel (1920W). Now think of a garden hose (9V Lithium Battery) with low pressure and low flow (1.2A) that can only turn a small wheel (10.8W). Lastly, think of a floodgate of a big dam (power transmission line) with enormous pressure (500kV) and massive flow (2270A) turning a gigantic wheel (1.134MW).
You are absolutely right. Some arc welders use just 24 volts but send such high amperage that it works and melts steel, yet at 24 volts you can hold the welding leads and not have the current "pushed" through your body and so you don't suffer any electric shock if you mess up. The lower voltage is actually a safety device. As you know 240 volts "pushes" easily through your body resistance and causes problems if you're caught holding the wrong wires. Cheers, and many thanks for writing.
Fantastic model, I plan to steal this for illustration whenever my nephew inevitably asks about the topic. One mislabel - if the rate of water flowing out of the bag is analogous to current, the water you collect in your hands is necessarily some quantity of charge - the ‘power’ in this system was already dissipated dispensing it through the puncture.
right? Its still hard imo, beause you just cant see or imagine it.. its confusing, somehow you can measure amps in the air, but can you do volts too, and what about alternating and direct.. ughh I guess with this specific topic theres never going to be a moment it *clicks* for me, I guess understanding will only come with experinece
Voltage would be the height of the cliff and the density of the fluid. Current would be the volume of fluid over time going over the edge. Watts would be the kinetic energy of the fluid as it hits the ground.
Electrician here. Didn't really explain anything. 120v wouldnt equal more flow/power etc over 12v. You demo applies more to Amperage, not voltage. Consider 120v at 0.01A compared to 12v at 4A. The 120v 'pressure' is much, much less than the 12v soley due to amperage. Its why fast chargers are low voltage/high amperage. Its why 2,000,000v at 0.0001amps wont kill you when 230v at 1A could kill you. Terrible explanation
Wouldn't the water that he collected at the end be more akin to joules and not watts?
27 дней назад
I love how you can always tell when someone spends most of their time on Reddit by how they type out their comments. It reminds me of how you can always tell when someone’s a fan of the band ICP.
It may have been Max Planck - one of those great German physicists, anyway - who asked his class if anyone could explain electricity. No hands went up for a while, then slowly one hand was raised, and just as Planck was about to ask the student to give his explanation, the hand went down again. 'What a pity!' said Planck. 'The only person in the world who understands electricity is here in this room, and he has forgotten the explanation.'
Omg, why wasn't this video recommended to me years ago?! I finally understand the differences. Like other comments, I watched many videos over the years and still did not quite grasp it. Thank you so much.
I’ve been obsessed with sound systems and installing them for 14 years. Sadly just learned the meaning behind Volts. Makes me wish i studied harder In school! Thank you sir
I don't know why RU-vid thought, "Hey, you should watch this video from 13 years ago," but it sure made me wish old RU-vid was still around, when it was fun.
Great demo. I think the better analogy when you held a few "Watts", is that you were holding a few joules (work that had been done). Watts is power which is work done over time in seconds.
I always explain to using plumbing. Volts is the pressure, size of pipe small low voltage larger diameter pipe higher voltage. The water is amperage. Watts is the measure of amount of work being used or required. Amperage is the temperature of the water in the pipe. Higher amperage the hotter the water.
This demo shocked me coz i thought it’s too complicated but you good sir made it really simple. And i love the way you act like you were electrocuted when grabbing the “watts” 😂😂😂
This is how our explained it in basic electricity, EMF Electro Motive Force. Using a newly released set of training curriculum developed for the Navy. Water in various sized tubes, and marbles in a tube explaining electron flow. Really easy to begin to grasp. This was in 1960 onward.
Electrician from Germany here. When i was in School, during my Apprentice to become an Electrician, the Teacher started to tell us about Volts and Amps. He asks me to hear i got it or not, so i started to explain it in Terms of Water flowing and using the same Terms like you did it here. The highly educated Teacher started freaking out and told me to never compare these two Things. They are totally different and have nothing to do with each other and i only should use professional Terms to describe it. I laughed at him and told him that i'm not a professional Electrician yet so i use the Terms that fit for me right here the second Week after starting my Apprenticeship and he should stop talking to us Newbies like we where Professionals for at least 20Years.😂 Turned out his Lessons always where like: Starting a new Topic with reading 10Pages in the Book followed by filling a Paper he gave us with Terms from the 10 Pages and writing a Test about the Things we have read and written in these 3Hours of his Lesson. Topic solved for him. We tried to ask Questions but he only repeated the Sentence from the 1 Book we had. After 6 Months of complaining about his Method of "teaching" i got to his Superior Teacher and told him why the whole Class cant pass any Test this Teacher was responsible for. After another 6 Months we got another Teacher and everything turned better. Now i work succesfully as an Electrician but Videos like yours always remind me to those Days with a Teacher who had no Clue about what he was supposed to teach us about but hadnt the Ability to even tie his own Shoelaces.😅
Idk - starting with watts is weird because I understand watts as the power produced from volts and amps, and battery power is listed as volts and amp hours.
People are usually shocked when they find out I’m not a very good electrician. 😂. (Actually I was very good at it for over 40 years). Great explanation. Thanks! ⚡️👍👍👌
This video is great!!! I am searching videos because I am thinking about joining a apprenticeship (at 30yrs old lol) And I’m really happy you explained this so well. You made it so much more understandable
