Parallel resistors (part 3) | Circuit analysis | Electrical engineering | Khan Academy
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- Опубликовано: 18 сен 2024
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When two resistors are in parallel, the equivalent resistance is the product of the two resistors divided by their sum. When both resistors are the same value, the equivalent parallel resistance is exactly half of the original resistance. Created by Willy McAllister.
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It's important to note that the notation of Product/Sum only works when you have two resistors in parallel. Otherwise, it gets more complicated and you're better off using the original formula.
you are right but sometimes when you have multiple parallel resistors and the numbers are so that the LCD is very high you can add the first two then the second and the third and so on.
Thanks I got a little confused here.
@@pokeanalysis4917 yeah that's how the smart guys do it
Use this formula only when there is 2 resistors in parallel series otherwise don’t use it
Why?
It was all going so well and then this maths popped up. What branch of mathematics is this?
There's a lot of Algebraic Transposition in there. He's just showing the steps to how to get to the shortest equations. The great thing is you can rewind it. It is difficult. I when from barely scraping through year 10 and spending my whole life as a boilermaker, to starting a diploma in electronics. I'm 3 weeks into my studies and i understand this stuff now. Ya just need to understand Kirchhoff's law, Ohm's law and how to transposition them at this point in the playlist.
loneventhorizon Thanks man, I appreciate the feedback. Good luck with the diploma, I hope it goes well for you :)
I watched it twice and I took notes.
Most of us today are using calculators. The the easiest way to calculate parallel resistors is to use the first form. On an algebraic calculator enter the following:
R1 [1/x] + R2 [1/x] + Rn[1/x] = [1/x] The Rn indicates this method can be used for any number of parallel resistors.
Great explanation of these formula derivations! 😊
nice video sir #electrical academy
Geat job. One question. What book would you recommend to deep into these concepts.
ncert 10th grade i as a 10th grade student would personally reccomend but if you still find it difficult you can always use khan academy as this is the clearest explaination you will find
OMG THIS IS SOOO HARD😂😂😂😂😂😂😂😂😂😂😂
I understand how one can take equations and shift them around to make a more simplified equation. I'm more practical minded. I can google the equation. :)
What is the purpose of putting resistors in parallel ... current drop ? how about in series ... voltage drop ? -
Mike Jarvis for example in our housholds electrical devices are resistors, so for eg if they were installed as series resistors and one device go down/break.. all the other devices will not get any current therefore we use parallel I hope I answered your question
Mr Professor,
You're taking about 2 Parallel Resistance. But it would be if there is 3 Parallel Resistance??😐
ThankYou Mr.@@null1534 🤩
Why bother remembering the second parallel equation if it only works for two parallel components.
It helps you get thinks done faster when you are analyzing the circuit, though using the original formula will get you to the same answer but you'll have to do more calculations.
What did the pirate have to say about his sequential resistor circuit? RR...I'm sorry.