Resistors in Electric Circuits (9 of 16) Combination Resistors No. 1
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- เผยแพร่เมื่อ 2 ต.ค. 2024
- Shows how to claculates the voltages, resistances and currents for a circuit containing two parallel resistors that are in series with one other resistor.
In a series circuit, the current is only able to flow through a single path. In a series circuit, the current is the same throughout the entire circuit. The voltage in a series circuit is divided across each of the resistors. If one of the resistors in a series circuit stops working, the current will not be able to flow through the rest of the circuit.
In a parallel circuit, the electrical current flows through multiple paths before returning to the power source. The voltage drop in a parallel circuit is the same across all of the resistors. In a parallel circuit, the current is divided up through each of the resistors. If one of the resistors in a parallel circuit stops working, the other resistors in parallel will be able to continue to working.
A resistor limits the electric current that flows through a circuit. Resistance is the restriction of current. In a resistor the energy of the electrons that pass through the resistor are changed to heat and/or light. For example, in a light bulb, the tungsten filament acts as a resistor that heats up because of the current going through it, causing it to glow. Ohm’s law, V = I x R, states that the voltage drop across a resistor is equal to the product of the current flowing in the resistor multiplied by the resistance of the resistor.
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At the first watch I was like ????????? But then I watched it again paying more attention and was like: BRO THIS IS LITERALLY THE EASIEST THING EVER
TYSM!!!!!
Usually if you think about it a bit, most things are not too complicated. And thanks for the comment.
sir?? can give email.. to ask you the question about circuit??
you're 10 times better than my teacher.
Thanks for saying so....very nice!
Step-by-Step Science wow this is the first time my comment gets pinned by someone. Thank you :D
@Gaurav Chaurasia bro frr
Sometimes TH-cam is better than are professor and in this case he did lol
thanks. I found this video extremely helpful. I positively had no idea how to correctly carry out these processes (before I came across this video).
Glad to be of help...You can see a listing of all my videos at www.stepbystepscience.com
Dont erase this video thanks man
I don't erase any of them
Thank you dude from the past I have a test in 10 minutes lol
Good luck!
Am I the only one that thinks he sounds like Vince Vaughn???😊😊
No you are not....but thanks for watching.
yes he definitely sounds like vince....
You make it so easy! Going through your videos helped me more than 3 hours of lectures.
Sobra talagang nakakatulong tong vedio ahhahahahahah i love this
Thanks for the comments
You sir, Just saved my life. Great video
This was extremely helpful. Studying for my physics midterm. Thank you very much :)
thank you so much! Your examples are straight forward and very easy to follow
+xFailage You are very welcome, I try to go over everything step-by-step….in fact…you can see a listing of all my videos at my website, www.stepbystepscience.com
hey found some great videos on your website. You have many helpful videos in the physics section that will help me throughout my degree thanks!!
Ah yes....Elektrsity
Man is an Elektrician
Just a high school science teacher.
Nice Brian Swarthout, this helped us ,thanks
+Mohamed Robleh I glad that it helped you guys out.
You can see a full listing for my videos from my website at; www.stepbystepscience.com
+Mohamed Robleh yeah bro this's a clear video with clear explanation, thank you so much +Brian Swarthout, you save us before our exam
+MG Germany yeah Man that was so Nice imagine the head that "filthy" did when he realised he was worng kkkkk
kkkk, i get his doubt on his pocket kkkk
Thanks Brian! I'm a bit confused. We know that parallel resistor has the same voltage as Vt. How come Voltage going into R1 and R2 is not 24V?. Could it be that wire going into R1 and R2 from the power source has nothing in between that interfere with the voltage, while the wire going out, back to the source is interfere by R3?
I'm Currently doing a electrical engineering course and i was struggling too understand our Resistors in electric circuits worked, it wasn't that my teachers were bad i just struggled too understand the information but after this video ive learnt more than i need too know and now i feel confident for my semester exams that are happening this week for my course
Thanks for all the help and being more understanding!
You are very welcome, thanks for the great comment and I hope the exams go well.
Thank you so much 🤗
You’re very welcome and thanks for watching!
One of the best and neatest step by steps videos I've seen. Thx
Literally the GOAT. Going through my Electrical apprenticeship and you are making all of this very clear and concise. God Bless you brother!!!
Glad to help, thanks for the nice comment!
The is a much more easier way to find out the Req ((12)-¹+(5)-¹)-¹=3.529
It is the same thing.
@@stepbystepscience pretty much
Thank u so much bro.saved my life
Glad that the video helped, thanks for the comment.
Thanks man it helped a lot
You're welcome, glad it helped.
@@stepbystepscience got my exams tommorow, this is a God send
hope the exams went well!
@@stepbystepscience Thanks! I actually somewhat aced it but idk since the result have not come yet.
i’m learning this in 6th grade for science olympiad and i didn’t understand anything. Thank you so much for helping me understand.
Happy to help, and thank you for the nice comment. Best wishes!
Thank yu sm i've been looking for this kind of vid to do my homework....finally got it tysm👍👍👍👍
Very glad it helped! Thanks for watching!
thank uu, literally i was soo stuck before this. I had watched a ton of "How do calculate the voltage drop in circuit videos"', but for some reason i could never find ones, where the circuit included both parallel and series and how to calculate INDIVIDUAL VOLTAGES AND CURRENT. Like , before i only knew how to calculate the total current and resistance in combination circuits, this helped a lot in terms of findind those for individual resistors:) Made so much sense, when you explained, so thanks a shit ton, u saved my grade ahaha
Glad to hear it, and thanks for the nice comment!
Thank you so much, sir, for this amazing video. You literally saved me!
It's so nicely explained and so easy to understand.
I wish you could be my physics teacher!
Thank you, again sir!
You are most welcome. Thanks for taking the time to post a nice comment.
Aren't the values for voltage across R1 3.68 and the same for R2 so that they add up to 7.36. You inserted the whole 7.36V to just one resistor when calculating your current1 on the 5th step. Pls reply with all due respect.
No, this is a common mistake. They, R1 and R2, are the same so that R1+R3 = the battery voltage and so that R2+R3 all equals the battery voltage.
best tutorial on this topic
Thanks so much!
Well explained. I've spent about 5 hours thrashing this all out, so thank you! Wish I'd found you first.
Yeah u are right
Is there such a saying, what is the voltage drop accross R1 ONLY?, or it has to be a combination of R1R2 which would be 7.36v
This can be a bit hard to explain but each resistor has its own voltage drop, but because they are in parallel they are both the same. Even if they have different resistances. The currents could be different depending on each resistance.
thanks:)
Thanks for your lesson here Sir.
You are very welcome
Very good tutorial. I came across many monotone tutorials..this one by far was the best explanation and clarification of combonation circuits. well done sir!
im literally crying over this stupid topic and u just made it a lot simpler. thanks
Happy to hear that! You're welcome.
Thank you, it's help me alot to practice and get ready for Gas Technician G3 exam.
Good luck on the exam!
now i won't fail my physics test lol. really helpful vid
I hope the test goes well. You can see a listing of all my videos at my website, www.stepbystepscience.com
I'm watching your circuit videos the night before a big test because I didn't pay attention to lectures, because my teacher is a spaz and is all over the place. But I have to say, you are TOTALLY saving my grade. Thank goodness for you
+Alyssa Ratchford Glad that I could help, thanks for commenting,
You can see a listing of all my videos at my website, www.stepbystepscience.com
What if there are 2 parallel resistors, I already did the first step but to combine them do I do the one over rule
Yes, to combine parallel resistors you can use the one over equation.
THANKS A LOT SIR.PLEASE KEEP UPLOADING THESE HELPFUL VIDEOS.
Thanks so much better explained, impossible 🙏🙏
You're so welcome!
Thank you that was absolutely helpful you are the one who made me understand it
You're welcome. Glad to hear it!
Thank you so much i have physics test tomorrow and you are literally gonna save my life thanks man
Hope you ace the test!
@@stepbystepscience Thanks to you mostly I smashed an a* 58% ;)
Y'all can use
R total= R1×R2/R1+R2 for the resistors in parallel
You can also do it that way.
sir you are STAR its very help full to understand for me many thanks
That is very nice of you to say, thanks.
This video was instrumental in me finally figuring this out. Thanks for posting it. Some other explanation I found before had you "stretch" the circuit out into a straight line, and for some reason start with series resistors and all kinds of convoluted junk. Think was just straight to the point, and I especially loved that you didn't assume any knowledge. Even taking the time to briefly explain the thing about the reciprocal, but without beating a dead horse for people who already knew what it was.
Great and thanks for the comment.
what if you had two resistors and wanted to find the voltage in between? is that possible?
Not really, the voltage is actually the difference in voltage (energy) between two points. So can not find the voltage at a single point between two resistors. You could find the change in voltage across each of the two resistors. Does that help?
u r a life saver
Thanks for the comment.
I finally get it and can solve the basics let's go deeper.
ok!
Thanks
Very easy way of teaching
👍👍👍👍
It's my pleasure, I love to teach!
Good work . 👏 very good explanation 👏 👌 👍
thanks so much!
bro holy shit your explanations are very easy to follow tysm
You are very welcome.
so helpful, thanks
you are very welcome.
You are best ❤️ live long to save many people's lives
Thanks, best wishes to you!
Loved this video. Been watching a bunch and not getting it.
Glad it helped, thanks for watching!
This was more clean than what I got from my rectule
Thanks, glad you liked it
Amazing explanation thank you 😊
Glad it was helpful!
To find equivalent resistance we can also use the formula
R(1,2)= products of R1 and R2 divided by sum of R1 and R2
I think so, there is more then one way to get the answer.
what if the problem is the same like this but the difference is that it has a another box of 2 parallel circuit? so it has a 4 parallel circuit in total. Pls help im having a hard time for this my teacher is not that effective in teaching i hope youll notice my comment and do a video about it.
Then find the equivalent resistance of each of the two parallel blocks, after that there will be two "equivalent" resistances in series and you can just add them together. Does that help?
Equivalent resistance is 3.53 ओह्म. Why we can't soloving parallel equation 1st then R 3.
Current is following +ve to -ve
On my question I have to find the current no resistance is given, only the voltage of each part
I would have to see the question, but there are three things current, voltage and resistance for ohm's law V = I x R. You need two of the three to solve for the third.
@@stepbystepscience I do have a bit of current given for one part so I might be able to branch off of that
Great job explaining. Makes a lot of sense. Will recommend to others that need this!!
Glad it was helpful, thanks for watching!
@@stepbystepscience I do have a question though....
When you are trying to solve for resistance current and voltage, how do you know which ones to solve for next after you solve for the totals?
@@6ft3introvert Good question, these problems are a bit more complicated because there are multi-part and there is not one way to get everything. For this problem you can get the voltage across the bottom resistor, because it has the total current and you are given the resistance. Then you can get the voltage across the parallel resistors and their currents. Does that help?
Thank you very much
I don't get how you get 0.283. How did you find the LCD?
I don't find the LCD I just put it into my calculator, 1 / 12 + 1 / 5 and then hit the equal sign. = 0.283
@@stepbystepscience just go straight to 12 times 5, it's quicker.
How did you get 24V for number 1 question?
There is only battery and it a 24 V battery. so it can't be anything else...
@@stepbystepscience oh okay 👍🏼 thanks man.
Your great, thanks.
Thanks for another great video! Loving it.
Great video, clear set out perfectly
Thanks so much!
OMG I understand I this helped me get it through my think skull thank you!!!!!
Great and thanks for the comment.
brilliant! thanks
thank you very much 😭😭😍😍😍
Always welcome, and thanks for watching!
i think he was wrong in the voltage drop part cuz u aren’t supposed to subtract it
I don't think so.
oh i got ur step cuz something’s missing so u had to do it
This helped me so much! Thank you!!
You explain it good thank you
Glad to hear that, thanks!
Very helpful thanks ☺️
Glad it was helpful!
I had so much trouble understanding the concept of parallel circuits receiving the same voltage specifically in combination circuit problems, but I finally understand!!! Thank you
Yes, that can be a hard one to understand conceptually.
For step 2 I find it faster to just do (R1^-1+R2^-1)^-1 it’s just faster and removes some steps
OK, if that works for you then great.
For parallel you said the voltage of the battery is equal to the other voltage (Vb=V1 + V2) so why is the two parallel resistors not equal to 24 please?
In 7.03 why are you taking 24 as the voltage total and not the voltage drop in Resistor 1 and 2
24V is the total voltage (the voltage of the battery), 16.64V is used across R3 so the remaining must be across R1 and R2. Remember because R1 and R2 are parallel to each other, they each have 7.36 V across them. Does that help?
Thank you dude you are the best
Glad you think so, thanks!
I have been yo school for quite a while...and you explained this stuff in 10 min.. Consider teaching bro LOL
I am currently teaching physics and a little math in Berlin Germany.
This is the best tutorial well explained and easy to understand .In just ten minutes I get to understand everything.Thanks for the video
You are very welcome, thanks for the great comment.
This video is great! . I was so lost today in class I watched your video and I finally got it .
That's awesome. Thanks for watching!
My teacher needs to take notes on you man, subbed
Thanks for subscribing.
How about the current in resistor 3?. You have only solve for R1 and R2. How about the R3?.
I must have talked about that in the video, but it is equal to the total current.
I confused why does the R1, R2, and R3 are not equal to the total Current which is the 2.08. Because if you sum up the current in all resistors it can be 4.16. which is greater than and not equal to the total current 2.08.
@@danijanegonzales6680 R1 + R2 = the total current. Not R1 + R2 + R3, but R3 is also equal to the total current.
So you could summarise by saying:
R1 + R2 = R3 = total current. The current splits before R1 and R2 but comes back together before it reaches R3. Does that help?
Thank you so much I get it❤️❤️😇😇
@@danijanegonzales6680 Great and you are very welcome.
Thanks for taking the time in explaining your theory by using step by step method. Easy to follow.
You are welcome.....You can see a listing of all my videos at my website.....www.stepbystepscience.com
What would be the process of finding the ohm's of a single resistor if given the total amperage and two of the three resistances
this is very help full man thanks.....
Thank you! I was able to follow your video step by step to complete my electric circuits lab!
That's fantastic, keep up the good work.
Great video! Is the total current going to be I1,2 + I3? Or will it just be 2.08 amps?
+Gary Harney The total current is 2.08 A. This is the same as the current through R3 and it is also equal to the sum of the currents through R1 and R2.
Great video. I am not sure about one part though. When you got the voltage drop across V1,2 and worked it out to be 7.36V. To find the voltage dropped across R1 and R2 do we just divide 7.36V by 2? so 3.68V dropped across R1 and 3.68V dropped across R2? Thanks.
No, very important...the voltage drop across parallel elements is equal. So the voltage drop across each resistor, R1 and R2, is the same and is equal to 7.36 V.
Step-by-Step Science Okay. thank you for the help.
How did you get 0.283 ohms? If 1÷12= 0.083 is the answer?
This video saved me during online classes in quarantine. Thank you so much!
You're very welcome!
Thanks sir .. With the help of these videos , i am able to do all the exercises related to my topics.
Great that you found the videos to be helpful.
suberb video...i love it.
You are very welcome, thanks for watching and commenting.
Thank you thank you thank you my IB Physics exam is in 2 weeks and you just gave me some confidence!!!
Great, great, great, hope the exam goes well.
big ups very helpful
Thanks. Glad it helped!!
thanks
Now I am able to solve any problem thank you sir...
You are very welcome. You can see a complete listing of my videos at www.stepbystepscience.com
bless your heart bro
Thanks so much, back at you...
Really awesome👌💕👌
Thanks so much!
u the goat bro respect
Very nice of you to say so.