I watch this video every 3 months, just to make sure i don’t forget the topic.

as someone who failed chemistry, this answered about 4 questions and raised about 16

Never thought I’d end up on a Linus video when trying to understand my uni coursework xD

As someone who is in the process of becoming a science teacher. This is one of those videos that will be saved and used in classes later on.

I can control the brightness of the light in my fridge depending on what setting my oven is running at... which is nice

I think this explanation is a bit over-complicated... but can I do better? Here goes. Volts (voltage) is kinda like water pressure. Amps (current) is like how much water is flowing. Think current, as in the current flowing in a river. Just like water, if there is no pressure, then the water won't flow. If there is more _resistance_ (say, a river with many twists and turns, or a narrow water pipe), it will take more pressure to make the water flow. This is just the same as electrical resistance (which is measured in _ohms_). Usually, if you have a source of electricity, it will be supplied at a certain voltage. Say, 120V or 240V. This voltage normally doesn't change much, regardless of what you plug in. Depending on the _resistance_ of what you connect to it, a certain _current_ will flow. When you have both _voltage and current_, power is used. Power is measured in _watts_. If you don't have anything plugged in, that is (more or less) a resistance of infinity. No current will flow. As you might guess, there is no power used. If you short circuit your electricity supply, that's a very low resistance. Plenty of current will flow. Lots of power is used! To carry lots of current, you will need thick copper in your wire. The electrons flow in the copper, so you need a thicker "pipe" if there is more flow. If your supply is a high voltage, you will need thicker plastic insulation around the copper. Just like you need a thick walled pipe to keep lots of pressure from bursting out. Perhaps you have a heater, which is 1,200 watts, or, 1.2 kilo-watts (kW). This is how much power it will use. Of course, your electricity bill will be higher if you have your heater switched on for longer. If you run it for 10 hours, you will have used 10 times as much energy as if you ran it for 1 hour. This is why energy is measured in kilowatt-hours (kWh). That is, the number of kilowatts of power used, multiplied by the number of hours it was used for. Running your 1.2 kW heater for 10 hours will consume 12 kWh. The expression "kilowatts per hour" does not make any sense (unless there is something very, very special going on!). Batteries are slightly unusual, as they are measured in how much current they can provide, for a certain amount of time. This is because of chemical reasons. So, your battery may be able to provide 2 amps for an hour. This is a 2 amp-hour battery. If the battery voltage remained exactly the same, this would equate to a certain amount of kilowatt-hours, but sadly the battery voltage drops somewhat as it runs flat. This makes it more complicated, so amp-hours is the preferred unit of measure. Now for some maths: Voltage = Current x Resistance (V = I x R) Power = Voltage x Current (P = V x I) An example - your 120V, 1.2kW heater. How much current is flowing? Put those numbers into the second equation. P = V x I 1,200 = 120 x I I = 10 amps. Easy! What resistance is your heater? Put the numbers into the first equation. V = I x R 120 = 10 x R R = 12 ohms. Let's plug your heater into 240V instead! How much current would it draw? V = I x R 240 = I x 12 I = 20 amps. Twice as much! How much power? P = V x I P = 240 x 20 P = 4,800 watts! That's four times as much! This may be a surprise. Your heater will certainly blow up. Did I do better at explaining it? Please let me know!

I have watched a few videos on this subject and was always confused. This finally cleared it up. One more analogy incase someone needs it. If you think of a can of hairspray, volts would be the pressure in the can If you press the nozzle down, the amps(current) would be the measure of how fast the hair spray comes out Watts would be a measure of how much hairspray was used in total

Linus I've been following your channel for a while. I've watched many youtube channels trying to understand the concepts of voltage and amps. Some of them even used the water analogy. I almost gave up trying, until I saw your video. There's something about hearing it from the right person that makes it click on a persons brain. Thank you so much!

As an Electrical Engineer, great job! Would've been so much easier to understand this concept with this video many many years ago

Volts=Caliber Amps=Firerate Watts=DPS AH=Magazine WH=Total damage

I love that you made me smile while learning! That’s the best way for me personally to retain things. Connecting humor and lightheartedness with practical application is a clever and effective way to teach. Well done!

Not gonna lie, this was hella confusing ahaha 😂. So many analogies, I just wanted to know what each thing actual represents.

Been in school for 22 years and this is - by far - the best explanation of volts vs amps that I have heard. Thank you.

That last bit though. First time I've ever seen an off-shoot in a techquickie. And it was GOLDEN!

Thank you so much! I needed some starter knowledge before I decide if I want to take a class and dive further, but I couldnt find anything I could understand. This is exactly what I needed to get me interested in electricity as I can actually grasp this!!! Thank you!!!

In physics terms: Electricity is measured in units of charge Voltage(V)=how much energy per charge Amp(I)=how much charge per time Wattage(P)=how much energy per time Therefore P=V×I Imagine electrons as trucks carrying energy. High voltage means each truck carries a lot of energy. High ampere count (current) means many truck passes through.

My teachers did a poor job to get me interested in stuff i guess. Thank you Linus , Guru.

wait, so US also uses kilowatt hours? But.. but that's dirty metric system! I thought they have something like 3 arm lengths of electricity, or something along those lines, they used to measure things in body parts.

I am about 30 years old, This is the first time i am coming across a person who has explained these units in such simple terms. I wish i had seen this in my school days. Better late than never

Explained nicely. Love the Serenity on the back of the door at 6:01!

The reason why it is called KiloWattHours, is because when you multiply two things together you will have to multiply the units as well, like how you do with the area, 10m * 5m = 50m^2. So if your device is running 1k Watt (per hour), and you used it for 24 hours. 1k Watt * 24 h = 24kWatt * h. That is why we have to keep the hour included, else you wouldnt have known whether that number is your total usage or just a usage on a specific period. Hope it helps

This taught me more then my 9 week electrical course

Thank you for this video. I’m not an engineer or electrician or whatever, but I can (and do) basic DIY wiring around the house. I’ve watched many KZfaq videos to learn how to do this safely, but never been able to figure out why. Why are breakers/wires in amps? Why is my power bill in KWh. Finally....I understand what it all means.

Clean, precise and using imagery which hits it home! Well done sir!

Thx Linus as always you seem to have a natural way of explaining things. Now i can move on to more advanced subject matter.

Thanks a ton, I was having a hard time wrapping my head around some of these terms and there's so many it can be confusing as to which means what but you were able to explain it in a way I could picture better

Wow this answered so many questions!!! Studying solar power batteries and voltage with amps and everything I am usually left with more questions than answers! This is probably one of the first videos I have ever watched or I did not feel like I was left with more questions! Thank you so much and please teach me more!

:) I'm studying for an architectural licensing exam and this made it that much more enjoyable. Thanks for the fun and educational video :D

the best self-deprecating humor, you just don't see it coming, hilarious!

Linus, I love you. Back then, people would mock me for wanting you explaining this volt, amperes and watts. But you have granted my wish. in short; thank you.

The water gun vs hose analogy to explain power was great. Thanks

Why did my teachers not explain all those units and relationship between them like this man.... Genius analogy explanation. Finally understood this after 13 years during 5 minutes...

This one finally cleared up my confusion. Great video LMG.

Great video guys! I find this concept is extremely difficult to explain to people who aren't engineers (like me). Based on the way you explained it, this will be the first video I recommend to anyone wanting to learn more

I really like this guy. I first watched him when discussing the three general types of sound equipment (i.e. subwoofers); he popped up in my YT feed for this video, so I thought it might be a great video. It is. He’s funny, explains the material well, and it’s actually educational for general topics. I sure hope he is around still, given this video is 7 years old.

Thanks! Easy to understand (clearly explained) and very useful!

That ending is fucking golden 10/10 holy shit

Monaco runs on 230V, New York runs on 110V → definitely no blue smoke, it will just run very slowly (if at all).

Good job once again. I'm looking to get a home back-up generator and this is helping me explain the details of calculation what size we need to the family. Thanks!

I think this is the third time I've watched this, and the second time I went to place it into favorites only to find it had already been placed there

...but the voltage in Monaco is 230V, and in New York it's 120V, so if you plug in that hairdryer in NY it will run at half the voltage, so it' won't explode, but will blow air at a slower speed... which you explain when you compare Power and Amperage. Blame the editor

4:46 best voice crack in years

From his w=v×i days to his taycan ones, it's been electrifying to watch Linus go through adolescence. Keep up the great content 👍🏼

Concise and simple analogies are used to understand. I just wish more videos were like this!

perhaps you could do a video expounding on the subtle differences between what the VA and W ratings on PDU’s, USP’s, etc and the implications they have on switching power supplies commonly used with said power distribution devices.

2:35 Every time he said "water" after this, this was the only thing I could think of. "Wat-er" "wat-er pistol"

Watching you for years. you are doing great work!

Sir Thank you very much for the Video. It Helps me a lot. #EngineeringStudyMaterials

haha love these jokes with editors :)

Very well explained. Thank you for this! 1 years since I did electronics at school and had forgotten :)

After 42 years I finally understands the difference between, Amps, Volts and Watts, Thank you Boss

This man can explain more in 5 minutes than my science teacher in 5 years

Linus, european is 230 Volts. Trust me, I'm an engineer. I always wanted to be able to say that.

For those wondering: a kilowatthour is 3.6 megajoules and a milliamphour is 3.6 coulomb. When dealing with AC the whole deal gets a little more complicated but it's a similar idea.

You confused me even more because now I have your explanation and my teacher's explationation. Both going crazy in my head

thank you for making this video! much love.

Thank You for these videos! I work in HVAC as a helper and I'm trying to learn use of multimeter. For detecting/trouble shoot any type of trouble such as electic motor problems, capacitors, transformers and contactors. I want to learn and have a clearing understanding of testing volts, amps, hertz, and contiuity etc. This is all very confusing, and where to start and or comprehend. I just don't know what to look for. Please help????????????

1:16 Actually its called Electromotive Force (EMF), and is only measured in volts due to it having a base unit matching that of the volt (kgmAS^-3 if I remember correctly)... other than that, and 15 amps of sucking power... surprisingly good video with good analogies! good on ya

6 years later and I’m here. Thanks for always helping Linus

Holy shit, not the tunnelbear ad sellout 😱 what a throwback

I've always imagined electricity as traffic on roads or highways. Voltage being the speed on the highways and amperage being the traffic. I guess wattage in this analogy would be traffic per hour at a given speed and amount of traffic.

3:30 that water wheel is spinning the wrong way

My hose has a jet setting. The water shoots out super fast, which feels like it's actually spraying more water. In reality, my plumbing can only push so much water out, and that volume is already maximized with the open hose. So, it doesn't fill a bucket any faster if I use the jet or not. When I use the jet nozzle it increases the PSI (volts) by decreasing the nozzle diameter (amps), but in the end it's still spraying the same amount of water (watts).

so to conclude this, if your breaker is 16amp you can enjoy more wattages in europe :PP joules is not explained, but joules is the amount of energy per second, its a value that reflects a total amount of energy, it can be kenetic or power, wattage is equal to joule, so a vaccum cleaner from 1000 watts moves 1000 joules of energy around per second. that way you can even calculate how much money the electrical company is gonna charge u to run this vaccum cleaner

just one day after my electricity test linus posts this

Hair dryer bought in monaco would not work nice if you plug it in New York but I'm sure it will not blue smoke. In monaco the voltage is 230V and it's 110V in New York I think.

First time ive ever slowed the playback speed

Very good explanation. Clearly explained using the illustration that helps easy to understand.

Nice little ending there, dammit John.

I still don't get it.

Great video! Now I have fully understood the concept i've been confused about for years!

My light just turned on for the first time. I'm married to an electrician and this is the best I have ever heard. Now I can talk like him and I want my EFI plugs back and a sine wave power control to hook up my telescope and computer. Im sure you get this. No more watts for me . I need to see my currents at play and know if I'm rated in all areas to safely protect my 6,000. Equipment. Your the best.

Hey Linus, What are VA (Volt Ampere) used in Uninterrupted Power Supplies. It is not "Watt". A 1400VA UPS is rated at 700W. Any idea WHY!?

Watt is love, baby don't Hertz me, no Morse

Few minutes of KZfaq video taught me more about electricity than few years in school lol.

Another unit is resistance measured in ohms. If you multiply resistance by current you get the voltage so if you multiply the current squared by the resistance to get power.

Great Video. Manually working out Consumption Calculating the energy cost of an appliance or electronic device is fairly easy. Most devices have a label that lists how many watts it uses, either on the device or in the owner's manual. You will need to find this number to figure out how much the appliance is costing you. You will also need to estimate how many hours a day you use a particular appliance. The Wattage Label If you can't find the wattage label, there are other options to determine how much power your device uses. For example, you can purchase a wattage measuring device, such as the Kill A Watt®. Simply plug your appliance or electronic device into the Kill A Watt® to determine how much power it uses. Or you can contact the manufacturer, with your model number, to find out how many watts a particular device consumes. You can also check the list at the bottom of the page for common wattage on household devices. Though your particular device may vary, it should give you a rough estimate of the energy expenses related to the device. Calculate Electricity Consumption - 4 Easy Steps Step 01 Watts Per Day To calculate energy consumption costs, simply multiply the unit's wattage by the number of hours you use it to find the number of watt-hours consumed each day. For example, let's say you use a 125 watt television for three hours per day. By multiplying the wattage by the number of hours used per day, we find that you are using 375 watt-hours per day. 125 watts X 3 hours = 375 watt-hours per day Step 02 Convert to Kilowatts Electricity is measure in kilowatt hours on your electricity bill. Since we know that 1 kilowatt is equal to 1,000 watts, calculating how many kWh a particular device uses is as easy as dividing by 1,000. 375 watt-hours per day / 1000 = 0.375 kWh per day Step 03 Usage Over a Month Period Now to find out how much that's actually going to cost you on your electric bill, you'll have to take the equation a bit further. First you'll need to figure out how many kWh the TV uses per month. 375 watt-hours per day X 30 days = 11.25 kWh per month Step 04 Figuring Out the Cost Next, pull out your last electric bill and see how much you pay per kWh. For this example, let's say you pay 10 cents per kilowatt hour. To find how much the TV is costing you in a month, multiply your electricity rate by the kWh per month that you calculated above. 11.25 kWh per month X 0.10 per kWh = 1.13 per month Another Example Here's another more costly example: Your refrigerator runs 24 hours a day. Most refrigerators consume 300-780 watts of electricity. Let's assume you bought a model that uses only 300 watts. 300 watts X 24 hours = 7,200 watt-hours per day 7,200 watt-hours per day / 1000 = 7.2 kWh per day 7.2 kWh per day X 30 days = 216 kWh per month 216 kWh per month x 0.10 per kWh = 21.60 per month Common Wattages for Household Appliances The wattage on appliances or electronics varies by device. Typically, older model appliances use more energy, but newer models tend to be more efficient. You can also purchase ENERGY STAR appliances, which are among the most efficient appliances. According to the EPA, here's a list of typical wattage levels for your everyday devices. Coffee maker 900-1200 watts Microwave 750-1100 watts Toaster 800-1400 watts Dishwasher 1200-2400 watts Washer 350-500 watts Dryer 1800-5000 watts Iron 100-1800 watts Ceiling fan 65-175 watts Space heater (40gal) 4500-5500 watts Hair dryer 1200-1875 watts Laptop 50 watts Computer monitor 150 watts Computer tower 120 watts Television 19"-36" 65-133 watts Television 53"-61" 170 watts Hope this Helped if it did would you mind maybe viewing my channel and just leave a like or subscribe for a few days. I really like video's like these.

These tech videos are getting more meme-tastic, and I'm okay with that

Remembering the fundamental types of quantities is key! Watts are a quantity of power: energy/time. So, a watt-hour or kilowatt-hour is power • time, which simplifies to a quantity of energy. Amps are a quantity of current: charge/time. So, an amp-hour or milliamp-hour is current • time, which simplifies to a quantity of charge. To be more precise, you can consider the actual units of watts (W), joules (J), amps (A), coulombs (C), and seconds (s). 1 W = 1 J/s, 1 A = 1 C/s.

As a mechanical engineering graduate that not practicing, I need this video to refresh regularly.

As an electrical engineer I was surprised of how well Linus presented it. Well done! Oh btw.. it's 230V 50Hz in most of Europe, not 220V.

so milliamp hours is pretty much like a fuel gauge telling you the total amount of energy inside of a full battery/cell? thanks!

Wow, had Linus presenting an actual advert for pulseway before my video, and not just a sponsored part of the video.

Hey thanks for having the electron flow going in the correct direction ;)

3:33 "If we think of the hose and the water gun pushing out electricity, ..." - Linus will be wet or electrocuted?!

Miss the days when Linus spoke much faster, saving time.

I have an over ampere and over voltage question My electric skateboard battery pack is 48v 4.4 ah, which gives me 7 miles range. I switch it out for a new 48v 8ah battery, which gave me 14 miles range(which I’m loving) Now I don’t know the max amp rating for the skateboard but I was thinking of upgrading to a 48v 12ah battery. Will this higher amp burn out my skateboard? What is a safe bump on ampere from the original 4.4 ah battery that came the factory? 2nd question I need more power for the occasional steeper hills, can I use a 60volt. 8ah (or 12ah) without burning out my motor and electric components?

So basically, (I am a beginner just starting to do simple electronics with breadboards btw), Volts are the pressure/force in which the electricity is pushed, Amps measure the speed of electricity flowing, and watts is the measure of the electricity itself? Just trying to make sure and not be confused, thank you for the explanation btw, great analogies and comparisons compared to other videos I've tried.

Better analogy for car people: Volts = Torque Amps = RPM Watts = Horsepower

It's actually quite a bad thing to use tap water in a neti pot due to rare bacteria that may be present. It's recommended to use distilled water.

Second rate youtubers? You guys explains thing thats complicates me for years much more simpler and yet thoroughly than my instructor..great job!

Thanks for clearing that up for me. I learned that back in highschool, but it has since become fuzzy again.

It's too bad joules aren't used more often. They feel like they should be more commonly used.

3:51 What kind of keyboard is that??? That thing is gorgeous!

im an electrical engineer, and i dont know how i managed to do it. But now im learning things here

Electricity/Electric Field is a hybrid of two different fields, dielectric field (electrons) and magnetic field. Both fields cross each other at 90 degree angle to produce AC or DC power as you know it. Dielectric field is measured in voltage, magnetic field is measured in current/amps. Both fields together are measured in watts. Electricity actually flows from positive to negative terminal, not negative to positive terminal. Positive terminal is like a faucet discharging electricity with pressure/force and negative terminal is like a drainage hole. You will get electrocuted if you touch high voltage positive terminal.

1:27 "am i in the frame? am i in the frame? oh lets just use another footage" lol

Why does the USA have such low voltage?

What sir said p= I^2R and p= V^2/R , And according to your mentions current intensity is 10 times dropped from equivalent voltage imput, 10 volts is 1 amp ?

Great video. Question...I'm new (self taught) to electrical engineering, repair + maintenance of ebikes. I installed a 4-light system on ebike - backlight, high beam (×1) and low beam (×2). I run everything through a 12v/24v power source (bank). Recently, I decided to add rocker switch (×2) to separate high be from low beam. I noticed that the LED indicators on the rockers will sometimes work, sometimes not but the lights will always work. I've looked for shorts, can't find anything. Power source is rated for 12v/24v. I register 28.5v on multimeter when everything is turned on. Could this be the cause why the rocker lights don't work? I've switched out rockers twice....same result. Hope u can help. Great video. /bklyn 👑