Ohm's Law explained
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- Опубліковано 27 лют 2016
- What is Ohm's Law and why is it important to those of us who fly RC planes, helicopters, multirotors and drones? This video explains the basics of electricity flowing through a circuit and lays the groundwork for an upcoming video in which I review the Turnigy Graphene batteries and examine why they may (or may not) be better than regular lithium polymer (lipo) packs.
Stay tuned! - Наука та технологія
Assumes everyone knows nothing.
Finally a video for me!
he should use algebra
With all respect to presenter - the top line, V, short for Volt - it's a unit of measurement for EMF or, Electromotive Force - just say'in
@@clydepiper4046 I sure it's the same as electromagnamotiveInertial force.😁
Some people Know Nothing and that's why they are here. Why are you here ?
What a complement you have given
So this is what my husband does. He’s an electrician. I didn’t realize how much math he had to learn. So proud of my smartie! ❤️🤓
At least it's simple math, as a programmer i have come across math that makes my head spin.
NiteOwl Programmers are some of the most brilliant minds I've come across. The people in your life are very blessed to have you to help them analyze their issues. 🙏🏾❤️
Man a lady who is proud of her husband...
I am a fighter pilot, yet my wife says I am useless 😂😂😂
Gosh! You are lovely person!
@@TheMagnay it's not just simple math, per say if you make electronics but it has a eprom chip in it and you want your micro controller to process all of the data in that eprom chip, sure you do math like resistors, capacitors, and crystal oscillators so that you don't fry your circuit and so that your circuit works, but it uses things like connecting the dot's, and oh boy does it get complicated, take a look at this video, and you will understand. ua-cam.com/video/LnzuMJLZRdU/v-deo.html and i'm not being biased, programming is pretty difficult to learn, but once you learn it, it get's easy, same with making circuits, but if you learn how to make electronics you basically know how to make anything, you could even control other electronics, and understand how a computer works fully, but without the right program your circuit wouldn't know what to do. both programming and electrical engineering is very difficult. here's a 3d printer i'm making. easyeda.com/Cipher0/3d-printer
This made learning Ohms Law so much easier for me. I’m learning electrical engineering through self-teaching and I was trying to just memorize the formulas before, but drawing it out the way you did simplified it so much for me! Thank you!
You not only nailed this down, Perfect Instructional material , but deserve to be THANKED & Complemented, for being a Superb Instructional Teacher of ELECTRICITY 101 ! Thank you,Sir, We need more unique individuals such as YOU!
Please keep making these kinds of videos Bruce! You are a great teacher.
+OHMYQUADcopter I second that, thank you! :)
This video has been very educational. As always, you've been a great teacher and so far, I have learned quite a lot... Thank you... Please, could you make more videos like this one?
Agreed! I have been looking around for good explanations on basic electronic principles, and these ones are by far the best ones I've found. I would definitely like to see mote videos about different electrical components and how they work for example!
Yes please! I have had trouble with multiple different things, such as RF, and your videos are a great help!
Is very good ticher
I always appreciate your ability to convey information in an easily digestible format. Big thank you Bruce! Cheers
Thanks for doing this video. We just went over this is my auto electronics class and it kind of went over my head. The Triangle format in this video for some reason really made it easier to get.
There are so many ways to learn it, I teach electronics with cartoons! Overall Electronics is easy...
I hope this man lives a long, healthy, comfortable life. A true saviour
Voltage = E= electro motive force, amps= I = Intensity, ohms= R= resistance.
EXCELLENT.
Holy shit. Voltage IS "the Force"!!!!
Isn't voltage= P.D potential difference
Tarana Huq yes
Wow really smart people in the comments. Just started school; just learning this stuff
I am an Aerospace Ground Equipment Technician for the Air Force, and this is part of our general training. I'd completely forgotten this over the course of my career, and this was a great refresher! Thanks very much!
Brandon Harris
One of the most clear explanations of ohms law I've come across, my teacher at tech needs to watch this to learn how to explain it without it seeming like quantum physics.
Great job mate 👍
I like the fact that you take the time to explain the electronics in depth. Others don't do that
Damn, 46 yrs old and just learnt this. I like how this guy explains things!!
Same here
Wow - your talent for explaining is so refreshing and clear. Many thanks!
OMG! I've watched a dozen videos on Ohms law and I never got it until I saw your triangle. Thank you so much. You're an awesome teacher. I need this for my Arduino.
I was looking for an refresher on ohm's Law. Your demonstration, just blew my mind! I went through an entire semester, trying to understand Ohm's Law, and you were able to explain it in less than 5 minutes. Thank you very much! I will be following you.
Thanks so much Bruce. Love these videos. Your so clever and so kind sharing your knowledge 😃
Best explanation I've seen yet! Thank you, sir. Also - I love your pulsejet videos!
incredible quality, not just a croaky voice and three pixels, great presentation, love it
Finally a teacher explains it in its. Most simple form! Thank you, Sir!
Thank you so much. This actually helped me get a really good job I applied to. This exact concept was on part of the testing.
i've been trying to get people to explain this to me in ages but with this video i totally get it. Subscribed.
Ok but grammar?
@@loturzelrestaurant don’t be that person
@@daisyshine5735 Haha.
Oh buddy.
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I'm 4 months away from graduating with a bachelors in Electronics Engineering. I approve this video. Thanks!
Very well explained. I spent hours to understand ohms law by reading a textbook. But looking at video tutorial it took me just 11 min 47 sec. Thank you so much for your video
Thanks so very much Bruce, for your time teaching the fundamental ohms law kind sir!! Great job !! Thanks for sharing this video !! I'd love to hear the rest of the fundamental components of electronics: insulators, resistors, and also a s much more information about magnetism and it's properties. Electro-gravitics is a subject of immense value and interest to me sir !!
When I learned all this stuff we used E for voltage (Electromotive force). so E=I*R. Also is worth noting that the triangle works for wattage P. Using E in place of V you get the pie formula. P=I*E. Solving for the other values, I=E/P, and E=P/I.
Another trick for those not algebra savvy, start with the basic formula E=I*R. the idea is to get the value you DON'T know to be by itself on one side of the =. You do that by dividing both sides of the equation by the value you KNOW.
So if you know voltage and resistance but not currently you divide both sides by the resistance as follows.
E/R=(I*R)/R
NOTE: the ()'s are to show that you must multiply before you divide which is the natural order of precedence in math.
This is allowed because you're doing the exact same (equal) operations on both sides of the =. Also note that any time you have a number (or variable) over itself (i.e. 2/2 or 5/5) it always equals 1. (think 2 halves make a whole). So to make it easier, the Rs on the right side cancel each other out. (I*1 is just I). To balance the equation again you have to do the same thing (divide by R) to the other side.
E/R=I*R/R which equals E/R=I. Since bother sides are equal you can flip it back to front and you end up with I=E/R.
This is how I learned it so it might be more confusing to some or it might help.
Enjoy.
This is exactly how Im learning it now
tldr = use transposition
yeppers old school e = v in this video the v in the video slows me down. eV of course is electron volts. when working above light frequency the use of eV is easyier than frequency length. you all knew that,,,,bye
Thank you Bruce. Could not but notice the vintage and myself at 75 knew I would understand you somewhat. I had forgotten the formulas of the triangle and you brought it all back quickly and simply. Thank you again
2 traumatic years of electronic training school decades ago couldnt teach me the basic Ohm's Law. You just did it. I do not need it anymore but it gave me peace to finaly get it in my brain. Thank you.
Bruce, I liked the demonstration of emitting the "blue smoke" from the resistor. :-)
+Donald D'Egidio blue smoke is only contained in the IC!
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You can't put it back
For those that have trouble with triangles I have a solution to remembering Ohm's Law. V=IRgin :)
Are you making an admission? lol
lmao
anything that can happen will happen
🤣
thats murpheys law
Thank you! Currently learning about Ohms Law in relation to speakers and amplifiers and how to match them without blowing either. This was a great video to start me off, and you were able to explain everything in a way that I was able to understand quite quickly.
Thank you for the refresher course in basic electronics. It's been 30 years since I first learned ohms law. Since I never put it to practice I have forgotten much of what I learned.
You assumed I know nothing, you assumed right. I appreciate your videos a lot, thanks Bruce.
thx soo much
I did well on my physics exam on circuits because of this video
u r welcome jon bye
This is the best tutorial on Ohm's law that I have seen. Thanks!
I wish you were my electronics teacher, when I was in the 9th grade. The formulas you explained was very easy to understand. Thanks
I copy your gratefulness for this video!
This really helped me understand something I never understood. Thanks for your help👍
In the credits: "A fly has been harmed in the making of this video." ;)
good one, dude
2:14
OMG! OMG! OMG!
M Detlef I come from the future to tell you to go fuck yourself
@M Detlef F...U! ;P
Wow, this is the easiest explanation video on UA-cam. Thank you sir.
I learned all this 40 years ago in the air force. Basically it was explained the same way. Good job as a refresher or teaching someone new.
Wow, you are such an amazing teacher! You made this so incredibly easy to understand and you did it so quickly! Where can I become a patreon?
very cool and simple
Easiest and best explanation I've found for this, thank you!
This is gold. Thank you for your simple explanation!
Using your video to study for my Asvab . You're very useful and have a wonderful way of explaining things !
Thank you so much i am saved from failing my science test!!!
Thanks for the simple explanation. My husband is dyslexic and asked me to watch this video and explain it to him. He's currently doing some training for work in this area. I understood it first time through, taking notes as I watched.
This video help me alot, I'm currently training as a electrical engineer with no background or knowledge. My boss told me to research Omhs law as it's the first thing to learn. This video really did make it easy to learn. Thank you 👍🏻
your too funny
"theres a fly i here, im gonna kill the bloody thing, hold on" MY MAN lol
Another educational video. Can you do a video about wire awg and current capacity for rc usage?
Thank you. Need to keep watching to grasp these basic, you have made it simple enough. Thanks
This was the best video I’ve seen on Ohm’s law. Thank you! Please make more. Love your channel
The derivation of "P=I²R" is because (1) P=VI and (2)V=IR, so substituting for V in equation (1) we get P=IRI or IIR = I²R.
I find the derivations of formula informative.
You are awesome at teaching and ya made me laugh with your comment, "I don't give a damn about current." 😂😂😂 Keep up the good work sir!
Thanks again
Great video, thanks. Please keep them coming!
Thank you for simplifying this! I have watch many videos regarding this same topic & yours, by far, is the most easiest way to understand it. Thank you!
Thank you for using V for volts and W for watts.
Me being common folk, buy my light bulbs based on (W)atts, not P(ower) and my appliances based on (V)olts not E(lectomotive force).
Now let's just change the I(ntensité de courant) to (A)mps and it would be a perfect world. 😜
Thanks for the memory reboot!
I know all about Ohm's Law, I'm an audio engineer by trade. That being said, I always enjoy your videos Bruce. even if I am familiar with the subject matter, I generally always watch your videos. One can never have too many ways of explaining something. The more we are exposed to a concept, the more we become one with the abstract subject matter and the better we are at applying the knowledge we have. Because, even if we know a subject, if we don't know how (or often times when) to apply the subject, we do not truly know the subject.
+erikdravn, This will be lovely two chapters away from current and resistance... 😭
audio engineering isn't real engineering XD
Thanks for breaking it down. I was having a hard time with the formula but you made it super simple.
Thank you for explaining ohms law with numbers in the triangle. This is a great tutorial.
I like your whiteboard videos a lot, Bruce. I'm really looking forward to your series on HAM radio.
Cheers
"I" stands for intensity.
What?
Thanks for creating this video, this video made it clearer and absolutely easier to understand in comparison to other videos!
This video was just the perfect explanation 🙏
"I" means intensity which makes sense for current if you look at it from a flow of water standpoint. M
Box Addict no it’s not shut up
Actually what current is measuring is the amount of electrons flowing thru a conductor in Coulombs and being pushed by an Electro Motive Force, EMF, and measured as Voltage "E' , which both are struggling to overcome as Resistance "R", which is the conductor/wire they are flowing thru.
@Box Addict one is a good analogy of the other. But they are in no way shape or form " All the same" . The formula for quantifying one can not be carried over to the other.
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Yes thank u for these vids. I cant write or explain well enough how good a job this guy does at teaching all this stuff. Its what i been looking for. Cant thank him enough.
Back in the early eighties I was given the two triangles W over A x V and V over A x R. The phrases we were taught were 'What Are Virgins' and 'Virgins Are Rare', so easy to remember. Now trying to relate it to P and I had me foxed for a while and watching this made it some much clearer. Thanks.
You explained this in a way it's simple to understand for a noob like me. Thanks
Why does EVERYONE explain Ohms law so damn complicated? Thanks for giving me the dummy version, I actually understand it now... damn!
Maybe you are dumb
Nicely explained
JJ Smallpiece humans are pretty unintelligent anyway and the weird thing is that the more we know the more stupid we become. If we knew even 1% of what information is in the universe we would still be pretty ignorant. So if you think your smart you are actually less intelligent then someone who things they are dumb.
Exactly
OK here you go: Amps=watts divided by volts.
the commutative law of math says you can arrange that equation any way you want ie watts =volts*amps, volts=watts divided by amps.
I just have to say , thank you for posting this video, this has helped me out on so many tests! It’s a very nice video even to just get a refresh of ohms law! Good job!
You are a great teacher.
Thanks so much Bruce.
We always learned that Voltage is E in ohms law for Electromotive Force... never saw it as V.
"I" represents amps because of the damned French! "intensité du courant".
Aahhhhh, now I get it. Was wondering, where the hell did "I" come fom?
Bien entendu.
I is for Inductance brah
I is for Inductance brah
Isabel Lumbreras I mean it’s not like that’s what he said or anything 🙄
Thanks for making a very easy to follow video for all the readers of topics for dummies books.
Understanding gives facts value. thanks for sharing your understanding; my world just got a little bigger and I a little richer because of the colors that you donated. You are a kind and generous person. Thanks
can you give a lesson on newton's law as well?
JESSE. WE HAVE TO COOK
Jaspreet Bindra eyyyyy 😂😂👏👏👏
spot on
Hahaha I was thinking the same exact thing
Walter white 😂😂
bind 😂😂😂
I finally understand this. Studied it 30 years ago and didn’t get it till now. Thanks
Learning more with each video.
Thank You Bruce
When I was working ohms law was 330 I go ohm any one working with electricity should learn this
I stands for "Impetus" which was what electrical current was called before Andre-Marie Amperes research granted it the name "Ampere"
Joshua Eilers
Thank you, Joshua. I was about to Google that. I enjoy knowing historical aspects of Science.
Actually... it's I because of the French. It stands for intensité (de courant). Not impetus.
Brilliant great presentation this from an former Grumman F-14 Tomcat avionics technician.
Thanks for the refresher, studied this many many years ago!
pacman t shirt? just for that it is a thumbs up
I want one.
Still haven't found anyone attempt to explain why the formula works
Yours is the first intelligent remark. I think Ohm's discovery is telling us about a relationship between mechanical work done driving a population of electrons through a conductor and energy used up against friction, meaning that it is converted into heat energy.
Voltage is also known as 'potential difference' or just 'potential' and is a unit of energy. Ohm' discovery and formula doesn't always take such a simple form as is discussed in this video. There are resistances described as dynamic with a non-linear connection between voltage and current.
In more advanced work Ohm's Law is superceded by Kirchoff's Laws and Ohm's Law becomes the Expanded Ohm's Law.
David Lixenberg
Excellent I am 71 and figure it is time to understand this.
Thanks
Hello, beginner electronics student here, thank you for the very informative video!
"I dont give a damn about the current."
Me and you man, me and you both
2:21 - The resistance aaaargh. This is pirate electronics 101.
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wish I had this guy as my teacher back in my highschool days. would have learned a lot more. Preparing to take my TKT II aka Dtsat test so looking to obtain all I can. Your teaching style fits the way my mind retains intel it receives.
Thank you for the video the first time someone has explained ohms law that’s actually made since to me
"I" means Intensity
I think the battery sign is wrong, isn't it that the negative is the short line and the positive is the longer line?
Simple and straightforward! Thank you 👍🏼
Excellent, thanks for this wonderful video.
Ham radio series???? When?Where?.............Please................
"I" stands for intensity, actually 'intensite' in french, as per Andre Marie Ampere....
Peter Palffy Thank you.
I cant thank you enough for explaining this so well.
There's a story about a physics student who was about to sit an exam in basic circuit theory. so he asked a friend is there was an easy way to remember the electrical power formula - "Easy" said the friend" Twinkle, twinkle little star, power equals I squared R"
His friend saw him after the exam and said "How did you go?"
"No good", he said, "I failed miserably, I got all the questions on power wrong!"
"How come, didn't you remember the little ditty I told you?"
"I thought I had, but it came out as 'Little star up in the sky, Power equals R squared I'".