Easy Calculator Method for Finding Total Resistance in a Parallel Circuits

[@matthewsingh4969]

man, you are a prime example of a classic life-saving hero of students with homework for tomorrow

[@RobotRiedingerEd]

Thank you.

[@kalaiselvikumar8170]

😁 same

[@exchangeXpert]

You Sir, just helped me realize that I had terrible teachers for physics. Thank you for letting me get back to loving electronics.

[@H1289-h8o]

Ok

[@_MDAgriVideos_]

@@H1289-h8o ok

[@Kholanee]

@@_MDAgriVideos_ ok

[@RobotRiedingerEd]

Glad I could help you out.

[@mydadleftmesoibecameayoutu335]

Bruh

[@williethepimp]

This reminds me of a stand in teacher I once had in year 7. She looked at the way we were being taught fractions and said "nay, I'll show you a faster way". Jaw dropping. The old antiquated ways should be abolished. Thank you!

[@x_FireProof_x]

Finally found something that I can relate to. I’m in my second semester for HVAC, electric motors. My teacher is all over the place and I’m having a hard time with word problem calculations for ohms law and how to follow the schematics; starting with where the power or current is coming into a motor and how it moves throughout the machine. I’ll check out what else you have but I appreciate the video, it definitely help a ton!!!

[@bilalkhares9337]

One thing that is also helpful is that when you have 2 resistors you can use Rtotal=(R1*R2)/(R1+R2) which is the same if u do the algebra for yourself.

[@sheharyarjillani]

Thanks, man.

[@randyaivaz3356]

Will have to give that a try

[@yellowbyrda2635]

YOU ARE AWSOME!!!.......THIS JUST REDUCED MY TIME AND MY QUESTION ACCURACY !!.....THANK YOU SIR!!......YOU ARE AMAZING!!!

[@kyleh6493]

I can't express my gratitude to this person enough

[@RobotRiedingerEd]

Thank you, glad that I could help.

[@polarbearcontent6589]

0p

[@BuildProne]

THANK YOU SOO MUCH. nobody anywhere would tell me and even my teacher is just like use the inverse but I have never head if inverse and couldnt understand stuff online till your vid. Thank you!

[@shyradelacruz6430]

THANK YOU YOU JUST SAVED ME FROM FAILING MY PHYSICS EXAM

[@RobotRiedingerEd]

Thank you.

[@DLmohh]

Same

[@pickle_a_day_keeps_the_dr_away]

Mate, this video really helped me, I have had a shocker of a teacher at tech, that explained nothing and just expected us to know all. I never did physics or algebra at high school so videos like this help out so much

[@RobotRiedingerEd]

So glad I could help.

[@karynasmith6026]

🎉🎉😂❤❤❤❤ congratulations thanks you’ve saved me from almost a heart attack trying to solve this problem in a 95 year old men thanks

[@TheMaddoguk]

This was not sinking in at all - until now!! Brilliant

[@xFalconFixer]

Hi, in my comment/review, I could add fancy words detailing my appreciation for this video. These words would tell you how much you've saved me from missing specific test questions. That your input, guidance, and wisdom were (are) exceptionally helpful. Instead of all of that, I will say THANK YOU!!

[@andrerashad203]

Signed in just to give this video a like. This method saved so much time.

[@delleah]

This helped me so much, I have never been good at physics but this made it make so much more sense. I have watched so many videos and this one is the only one that makes sense

[@chiangelakoani5339]

Me tooo 😂

[@Calxx_67]

RAZOR MAINN

[@JavarGamers]

Thank you so much! I have a test tomorrow and I completely forgot how to do this! You are a savior!

[@ONSTART]

Thanks so much. I was only shown the calculation without any explanation, now I understand how to calculate it myself 👍

[@lesstime1678]

1/20=0.05 ohms

[@TheRTM]

Please help. I'm using a TI-84 all of the numbers I punch in (using your example) are correct until we get to the last part of the formula. "0.025" from this how are you getting "0.208333333333333333333?" When I press enter after "0.025" I get "40".????

[@andrewwithers4843]

I have been trying to remember how I used to calculate parallel resistance in college, this calculator method is amazing and so much easier I wish I had known about it years ago. Thank you so much.

[@warrendeg]

Dude! I can't wait to show my buds this in my HVAC class! Thank you!

[@RobotRiedingerEd]

Thanks, Glad it helped.

[@jeremywithers3879]

I have an electric installation exam tomorrow, you have just helped thanks

[@RobotRiedingerEd]

Your welcome.

[@michaelbridges1634]

Answers for current and voltage: I Total = 5 amps I1 = 2.4 amps I2 = 1.2 amps I3 = 0.8 amps I4 = 0.6 amps Voltage Total (1-4) = 24v Resistance Total = 4.800768 ohms

[@k6aaq64]

46 years ago I was taught the R1 x R2/R1 + R2 and that is easy with a pencil and paper. However this way with a calculator is fast and easy. Very good explanation in short time. Thank You!

[@northiety9823]

That formula was for 2 given resistance. This formula was for more than 2 resistance

[@leybald60]

Currently studying for my radio amateurs exam in the UK. This was most definitely a light bulb moment. Many thanks.

[@WalterSulliv4n]

Thank you! I was going crazy trying to remember which button was the inverse on my calculator, haha. :D

[@ScriptedFN_]

I love you you saved our time me and my fellow friend wasted so much time re-writing the same answer.

[@thedude3225]

Are there other electrical calculations that are easily done by calculator, such as for capacitance? Thanks

[@weavercattlecompany]

It's just the reverse for capacitors vs. resistors 😊

[@Lord_Kaliyanta]

Thank you for this. Been searching for a while on how to calculate this easier!

[@RobotRiedingerEd]

Thanks, Glad it helped.

[@kennethendiape3813]

Where I find the enverse key in Casio scientific calculator? Plss reply me

[@RobotRiedingerEd]

Casio makes lots of scientific calculators. www.google.com/search?q=casio+scientific+calculator&rlz=1C1CHBF_enUS921US921&sxsrf=AOaemvKKZHyp3rE77SO4AqXGQ-rzNR9s-g:1634705920511&source=lnms&tbm=isch&sa=X&sqi=2&ved=2ahUKEwibzdCNmtjzAhWqnGoFHWkOCKUQ_AUoAnoECAEQBA&biw=1920&bih=937&dpr=1

[@RobotRiedingerEd]

Here is a common Casio Scientific. Look at the black key at the upper left. It is labeled x^-1. That is the inverse key. www.casio-intl.com/product/image/1425458799170/

[@miepmaster25]

we have been dwelling on this subject for 2 years at my school now. i never knew

[@paulinusekot953]

Pls a quick question.... If i have a value like 1k,3k,5k resistor, can i convert it to like 1,000, 3000 and 5000 before i start calculating or i should should just add it like that.

[@busy3082]

My god... You're a gentleman sir, much appreciated.

[@doge5603]

Less confusing formula than what my teacher drawn, thank you.

[@RobotRiedingerEd]

Glad it helped.

[@headway19]

Thank you soooooo much Sir calculating resistors connected in parallel with your teachings have simplified my problem to great extent. God Bless

[@dumbkitchu9073]

You sir are a LIFE SAVER

[@leratodibaks7632]

thank you so so much 😃😃😃, I'm about to write my exams and this trick just saved my life💃💃

[@rohangahir804]

Thanks. This helps alot. Our teacher hasn't even taught us this but it will be in our test . :)

[@mark_mellow]

oml now I know about the inverse button when before I was doing it like (1/10)+(1/20)+(1/30)+(1/40)=(1/x)...Thank You!

[@HamDX2LVG]

Found this really helpful, I don't suppose you know anything about RMS and would you be willing to do a vid on that subject as I am really struggling with Root Mean Square. Thank you!

[@frundlemud]

Excellent thanks. The scientific calculator with 1/x is in Windows 10 Accessories. Pin to taskbar?

[@chadwaterfield6432]

Will this work when your ohms are different numbers like 1/6 1/3 1/2? I did your method but not sure it it's correct

[@lead_sled7273]

Thank you for the easy explanation! Appreciate this video more than you'd know!

[@kevinlind4640]

Thank you!! Saved my day, and probably my grade too!

[@RobotRiedingerEd]

Thanks, Glad it helped.

[@randyaivaz3356]

Used this in the 70's for 4 8ohm Speakers, Parallel 2 Speakers, Parallel other 2 Speakers, then minus to minus, and plus to plus on both pairs, 8 ohm and 8 ohm in parallel is 4 Ohms, then Series the 2 Pairs, plus of pair one will connect to minus of pair 2. Then connect the negative of pair one to Amps Negative, Then Positives will connect to Amps Positive of Amps Speaker Connection. With a calculator, think I use to(lets say 4 resistors(330, 270, 5600, 2200 Ohms)), would Enter 330 Invert+270 Invert+5600 Invert, plus 2200 Invert, = , then Invert again, think it was that Easy, need to dig out a Calculator with Invert to try, been a while. Can find anyone mentioning that way, If you did, Sorry for missing it. 2 Equal Resistors in Parallel can be found by deviding one of the Resistors by 2, or half. Resistors in Parallel is the same Formula as figuring Capacitors in Series. Capacitors in Parallel Formuls is like Resistors in Series(just add them up)

[@orenji_desu]

Thanks man, you really helped me cheese my math quiz yesterday

[@juanvasquez521]

thanks for this one, teacher showed it in class I didn't pay attention and OH god did I join a world of pain trying to do it the hard way.

[@sz9349]

how do you solve if they give you all resistors except for R3

[@benfollowsjesus5504]

This helps alot thank you.

[@salomonntini4789]

thanks may god bless you

[@zachambrose625]

this is a game changer, thank you

[@Rachiiieeee]

Thank you very much This video helped me a lot 😊

[@douaasoltany]

lemme tell ya, I was about to drop engineering. I love you. Subscribng

[@denniswrigley2778]

When I do the calculation it’s coming up with a fraction 24 over 5 is there a way to change it ??

[@RobotRiedingerEd]

It is the settings in your calculator. Do a search using "calculator gives answers in fractions" and add your calculator's model in the search field.

[@james77011]

10+inverse +20inverse+30inverse+30inverse+40= and inverse one more time

[@MannySortoimking]

2nd function x2 (-1) YES OMG how did I know remember thanks. Cause I kept getting 0.000486425! Then I did the inverse key and got 2’055.8 = 2.056 kOhms ! 🙌

[@jeremyliew8366]

LIFE SAVER

[@Lostsoul877]

you're a life saver

[@terri-leighsan3585]

This was so helpful! Thank You so much!

[@RobotRiedingerEd]

Thanks, Glad it helped.

[@stevejones3662]

Brilliant! Superbly clear. Thank you.

[@Shan-0534]

Thank you so much for this!! I totally understand it!

[@Hebdomad7]

This video is transformative ! I love it!

[@giftagbontaenaisien430]

THANK YOU SO MUCH I'VE BEEN STRUGGLING

[@chiangelakoani5339]

Woowwww thank you so much sir. So simplified

[@sapphire9133]

thank you sir, you really just helped a lot.😁

[@RobotRiedingerEd]

you are welcome of course.

[@mastermindinclude7198]

Thanks sir, you did me a great help

[@paulkazjack]

Is this the same for caps?

[@carultch]

Sort of. Except since capacitance is defined in the opposite way from resistance, the formulas are reversed. Parallel capacitance adds up directly, while series capacitance adds up in reciprocal. For impedances in general, it is the same as resistance, where it adds up directly in series, and in reciprocal in parallel. If you treat the capacitor as an impedance given by Zc = 1/(j*omega*C), you can use the same generalized formula. Caution: you'll need proficiency in complex numbers (j = imaginary unit) to use this method.

[@noelparry8386]

Thank you excellent demo, easy to follow.

[@Vprophet]

This just made my day😊

[@tonyweavers4292]

Brilliant explanation. Thank you!

[@nkusadepts]

life saving explanation ❤️

[@om132]

you saved me for my physics exam

[@lea8075]

You just save my life, tysmmm!!!

[@RobotRiedingerEd]

I am happy to do it.

[@ulisesaguilar8079]

Grate Sir I appreciate grate video 100%

[@ramiroilagan6559]

thank you sir

[@kenvinmq]

Thank you very much. You are a life saver.

[@RobotRiedingerEd]

Your welcome.

[@Animation445]

Great video exactly what I was looking for.

[@steveharding3451]

Great help, but Im lost... this formula confuses me, how can you work it out, without the use of a calculator. Cant find a vid that explains the formula and what it means.

[@carultch]

Essentially, it isn't resistance, but rather conductance, that adds up in parallel. Conductance is defined as the reciprocal of resistance, so you add up reciprocal resistances, and then take the reciprocal. For 2 resistors, the formula simplifies to product over sum (Req = R1*R2/(R1+R2)). For n-identical resistors of resistance R, the formula simplifies to Req=R/n. Those are the two conditions that are practical to evaluate without a calculator. Anything else, you'll probably want to use a calculator, unless you really want to do a lot of tedious arithmetic, or you are given numbers that keep the arithmetic simple.

[@subtlesuplex2394]

Solid Gold buddy thnx!

[@Basketbol2]

What formula u use

[@paulriley5940]

lets say you have 2 resistors 4.7K and 2.2K you would cal those as 4700 and 2200? Then use what you showed in video?

[@RobotRiedingerEd]

Yes, looks like you are on the right track.

[@Flobloxy]

Thank you so so so much for the explanation, very helpfull!

[@ethanaw9272]

absolute legend

[@phm04]

omg thank you for reminding me that you have to inverse at the end

[@RobotRiedingerEd]

No problem.

[@limitless2036]

Thank you how would you do it with no calculator

[@henrygriffin14]

You are a legend

[@DrReginaldFinleySr]

It would be nice if you'd explain, why, though.

[@emperorcassius4551]

This helped so much. Thanks.

[@ayo4646]

Doood thanks man you saved a shit ton of time thank you a lot

[@mohamedklileche7382]

ideal for beginners well explained Thanks for sharing

[@RobotRiedingerEd]

Your welcome.

[@Vaibhavkerkar-wk5hq]

You're the best😊

[@drunkunicorn4608]

Best video for dummies 😭🤣 I was having fucken trouble

[@margielavarias1490]

you are so helpful!!! I appreciate your help

[@anaidaafzal7163]

Thank you so much !! This really helps:)

[@ehsan0606]

God bless you

[@venuyadav3470]

Tq❤ sir

[@prodson8310]

Great video. Thank you

[@RobotRiedingerEd]

Thanks for the nice comment.

[@Lightningrobotic]

Thank you so much. it is very helpful

[@RobotRiedingerEd]

Glad I could help.

[@arhamahmad4867]

if you dont have an inverse key on your calculator solve it algebraically. 1/Rt = 5/24 therefore 1/5/24 = Rt which equals 4.8

[@Gemyr]

Thank you so much.

[@lucapuzzoli8363]

Simply amazing

[@stevestewart3816]

i have a casio fx 115 es plus second edition and i cannot find the inverse button

[@RobotRiedingerEd]

Hopefully, you already solved this problem. The top row of black keys, second from the right. Labeled x^-1. i.ebayimg.com/images/g/tE8AAOSwJGRfQ2GV/s-l640.jpg

[@stevestewart3816]

@@RobotRiedingerEd thank you so much

[@kulyk_photo]

Thank you very much sir!