EASY: How to Memorize the Ohm's Law Wheel. "Drop the Wheel"
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- Опубліковано 7 лют 2025
- This is the easiest way to memorize the Ohm's law. It's a little dry, but it is worth watching. I developed this formula to help me remember the Ohm's law formula and the Power formula wheel for a test. I spend several days trying to make the wheel simpler but came up with this instead. Feel free to ask questions.
On the formula at the top, To make it more mathematically correct,
I should have written it as X = √ (P */ R)
More instruction at
mhmason.weebly....
I have been killing myself trying to learn this for weeks and just when I almost gave up, I spend 6 minutes watching this and it makes so much more sense. Thank you so much for making this!!!
Matthew, That is Awesome! I'm glad it helped.
In 2008 I memorized the power wheel for my master exam. First thing I did when I got into the testing center is draw it so I could use it for the exam. This is way easier to remember!
Mark, this is so simple it's awesome! I'm an instructional designer looking for an easy way to teach this to employees who work with power. I think I've got it! Thanks so much for constructing this easy to follow video. Mitch
Hey Mitch! Thank you for the complement! It's awesome to see people are still finding this useful.
Thank you for sharing this. I just watched it again after seeing it for the first time about a year ago. I learned Ohms Law the old way and this by far is so much easier to remember especially now that I am finding myself needing to use Ohms Law more and more. So clear and easy to follow along. Thanks again!
Thank you for sharing! It is always nice to know if people are finding this useful.
Taking a test this friday, and I was trying to find patterns. No way! You nailed it with this solution. I knew putting (I) in both groups is the same as " Being in Love. Relationaly. Put the word love in both left and right circles. And. "- In love- replacing current "I". If two people arent showing love or love each other you aren't,
"In Love". Haha.. So 4 me its easy to remember it, draw it and relate to this. Im actually "in love" now, with this awesome idea you created. Genius! Thanks... will help out.
Its funny. Im leaning all this for the first time and looking at the wheel for the past month, Ive been saying to myself "I can see that theres an easier way to memorize this but I can also see that I cant see it it yet. Ill wait until this all makes more sense to me then tackle this for easier memory." Well you beat me to it my friend. Excellent content! Thank you for making this easier for me and everyone watching!
Thank you so much for the nice comment! Glad it helped.
You sir are a hero. Going for my RI test this Monday and it’s closed book and this is just what I needed. Thanks. The only thing I think would be worth mentioning is when you have the exponents I kind of thought of it as I (amperage) is shared between both wheels and therefore it gets squared in the remaining formulas after the basic ohm’s law formulas. And then the same thing sort of occurred with my thought on Voltage being squared because it occurs twice in your new formula again only happening in the remaining formulas after the easy ones are taken out of the wheel so to speak. Great video.
same as you sir, we'll have our test tomorrow. This lesson really did not sink in my mind until this video came up. Thank you sir, keep making more videos.
Thank you for the encouragement! Hope it helped.
This made all of my tests in first year a breeze! Very easy to remember, the second equation is a little more complex but better than having to learn 12 instead of 2. Definitely sharing this
Thank you for the support Matthew! I'm very glad it has helped you out.
It is easy enough to understand using your formula (simply because I'm already accustomed to performing these individually , but I'm not sure how easy yours is to remember. You did a nice job coming up with this and are obviously a problem solver.
Thanks for putting this together. It's a very helpful roadmap to the unknown variable. Maths is not my field but need to learn this to change careers. I'm surprised there aren't far more views! Cheers
Thanks Will! It's a rather specialized field so I'm very happy with the number of views and the traction it is getting on UA-cam. I appreciate very much your comment and support!!!
This is alot easier. I am very thankful you put it together like this. If people only knew. Thank you so much sir!
Genius!
Thank you. You made this easy. I have watched other so called easy ways to memorize the wheel..... this beats them all.
Thanks Jeff! Thanks for the comment!
This video is everything. So straightforward and easy. Thank you!
Thank you very much for the comment! I'm Glad it helped!
Thanks after i watch this video i feel more confident taking my exam it really helped
Thank you for the nice comment! Glad it helps.
This is a great help for me Marc and I appreciate your video. I think you explained it perfectly and if you have any more tips concerning this type of material please post it. Thanks.
Thank you Christopher for the encouragement. I haven't been studying too much lately, but if I do, I will definitely share what I learn.
Amazing. Why this isn't a defacto thing within educational institutions, as a learning reference goes, instead of a large 12 formula wheel, is beyond me.
Thanks Ron, That's quite a compliment.
I've spent all weekend trying to remember the old wheel then I saw this . Why didnt I see this sooner. I got it in just 2 views. smh. Thank you.
Awesome!!! Glad it helped! Thank you for the feedback.
Thank you so much Mark! I still need to watch the latter portion a few times to have it stuck in memory but the first portion was very clever and easy to remember!
Maybe it's worth getting tattooed on my hand :P
Absolutely brilliant, simple and most important , accurate. Thank you.
Thank you very much for the compliment! Glad it helped!
Damn dude, you are the mvp
Thank you JMoney!
Sir, thank you for this video. It'll help me in my up coming exam for teacher 😁. I had trouble finding ways to remember this. But the answer was in the video ..thank you! More power to you
Hey Johncent! I'm always glad to hear that people are finding this useful. Thanks for the comment!
This is great, except I'm not seeing a shortcut to memorize the final two formulas. Maybe I'm missing it, and correct me if I am, but anyone memorizing Ohm's Law and the Power Formulas will likely need to know:
Resistance = Volts Squared/Power
and
Resistance = Power/Amperage Squared
...and unless I'm looking past it, there's no shortcut to memorize those two here.
Hi Keaton, Thanks for asking. The explanation of the top portion starts around 4:15 in the video. I know it is a stretch to understand. I'd like you to try something to see if it helps. First, have the "Ohm's Wheel" in front of you to compare the last 2 formulas. Then take your time writing it out as I explain it. Please Let me know if that helps.
It might just be easier to memorize those two separately for some people. Good Luck
@3D Possible Thanks for adding some insight to this. I haven't thought of this as a map, but I think it works well.
THAT IS AWESOME!!! Ive been trying to remember this for a test as well and was having a hard time. Thanks
Hi David, Thanks for the feedback! Let me know how it goes.
Any possible way for u to show some examples for the other formulas with this one ?
Hello Ri, I'm not sure I understand the question? This single formula combines the Power and Ohms formula, therefore eliminating the need to have any "Squared" formulas. Both the Power and Ohms share the Amperage on the bottom... It is the element that joins both formulas together. Also, Voltage is the same value in both locations... just put it where you need it. As far as the top formula, that is a little more difficult to wrap your head around. To make it more mathematically correct I should have written it as X = √ (P */ R) . Does this help?
@@MarcMasonMusic in your video u showed us the l2 x R how would u do E2 divided by R , on this , does the share amp or voltage always has to be a 2 what if they gave us a 5 on your amp does that mean i would have to multiply the 24 volts to the 5amps ?
WWWWWWWWOOOOOOOWWWWWW after looking at it and adding my own numbers i finally get it , thankyouuuuuuu
@@ritorres1721 Awesome!!! So glad you got it! Have a Great Day!
I like this...but I am very rusty...LOL I would like to see a few more examples with numbers...I suck at math...LOL - but great concept with your reduction!
I thought i found a better cheat sheet from this but I dont think this will work for every problem
How would solve (What is the current flow of a circuit that is delivering 43,200 watts and has 3 ohms resistance?)
Need (I) only know P and R ...
Hi Richard, Thank you for giving me some specifics. This is mentioned in the video but might be a little hard to wrap your head around. Using the Ohm's Law side... Put 3 (In "R") where it belongs. Leave (Your desired variable) "I" blank, and put 43,200 in the (Placeholder for calculation) "V". Perform the calculation "P (in V Place) / R", I = √14,400... Now "√14,400 = 120... I = 120 amps. If you wanted "V", you would put 43,200 in the "I" location and calculate accordingly... Please let me know if it helped.
@@MarcMasonMusic Gotcha it does help a bit. This does make it a little easier to remember but I'm a little skepticle so I will try it on more calculations
@@richardtaing7096did you end up trying it on more calculations, if so . Does this Method work FOR SURE?
This is great man thank you so much it makes it so much easier to understand and work the formula
Thank you Miguel!
omg such a lifesaver!!! ❤❤
Thank you so much! Glad it helps.
Super helpful strategy, thanks.
Thanks for the comment! Glad it helps!
You are a legend!
Thank you very much! That is quite a compliment!
WOW this is much better to understand 👍👍👍
I'm glad it helped! Thanks!
I'm confused as to why the last equation works. The square root of 12 X 3 is not 36. Just the same as the square root of 12 divided by 3 is not the square root of 4...
Thanks for the question. I am not an educated mathematician but I think I see where I went wrong. Maybe I should have written it as "X = √(P */ R)". The "square root" takes place after the multiplication or division. 12x3 = 36. √36 = 6. Let me know if that helps.
Ah, okay. That makes sense, thanks. Great video!
@@MarcMasonMusic so your saying that whatever number that divides into the whole number is the square of that number.
@@glenhickox724 Hi Glen, Thank you for the question. So sorry about the delayed response. To be clear... can I have the variables and values you are using? What are the results you have come up with?
i think that was helpful in simplifying the wheel however you sort of lost me at the end portion when your explaining the squared and desirable part. I think further explanation or even example with number would help. wasn't sure what you were squaring and stuff tbh. Im very visual when it comes to learning that why i recommended that.
Brilliant. My life has just become a little less stressful studying.
I’m confused as to how the squares formulas work, how do I know when to square? I’m knew to this. I just started my electrical apprenticeship
Hi Ivan, Thank you for the question. With this formula, there is no need to apply the "square". It may be a 2 part process. If you have " i and R " you use that to get " V " (The Ohm side of the formula)... Take " V " to the "Power" side of the formula to use " i and V " to get " P ". Does that help you?
Holy ****, I cannot believe that it is this simple.
Thanks for the comment! Glad to help.
Pure genius indeed.
Thank you Angelo! Glad you enjoyed it.
This is so smart. Thanks!
Thank you! I'm glad it's been helpful.
Very nice. Thanks
Thank you Michael!
Your a genius
Thank you for the complement!
Trying to understand u formula. What happen with the R up there
Hi Miguel, Thanks for commenting. sorry about the delay. Could you be more specific on your question? The R at the bottom or the R in the top formula.
Thank you, very helpful
Thank you !
You're welcome! Hope it helped.
Sir......it's great super job appreciated 👍
Thanks Nader!
Thank U much better method!!:) appreciate your intelligence!!!
Excellent! Thank you for sharing
thank you so much!!
Thank you Pavanaa!
THANK YOU
This is awesome. Thank you!
Thanks Nick!
thanks a lot . it was very helpful
Thank you for the comment!
That is awesome !! Thank you !!!
I'm glad you liked it! Thanks for the comment!
Brilliant, Thank you
Heyy you can call it the POWER PYRAMID easy for engineers
Thanks for the idea Lillyam! I'll think about that.
Masons Law
That has a nice ring to it. Thank you!
What about in situations where you have the Wattage and Voltage?
Hi MrShabindigo, Thank you for the question. You first calculate the Power formula (on the left) to get your "Amps", then you use the Ohm's law (on the right) to get "Resistance". Hope that helps.
@@MarcMasonMusic *smacks forehead* I don't get how I didn't see that. Thanks! This is great! You've made my life MUCH easier.
I ==E over R always
Volts doesn’t equal energy. You should be ashamed of yourselves right now. Force doesn’t equal energy. When did UA-camrs change the definition of volts in ohms law. Wtf happened in history. And who payed you to change the explanation in electrical engineering history.