Resistors in Electric Circuits (10 of 16) Combination Resistors No. 2

Shows how to determine the voltages, resistances and currents for a circuit containing two resistors in series resistors that are in parallel 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.
You can see a listing of all my videos at my website, www.stepbysteps...
Link for sharing this video: • Resistors in Electric ...
Support my channel by doing all of the following:
(1) Subscribe, get all my physics, chemistry and math videos
(2) Give me a thumbs up for this video
(3) Leave me a positive comment
(4) Share is Caring, sharing this video with all of your friends

[@Vwcz]

It is really true that a 10 minute video is better than a whole 1 hour lecture at University

[@sk8allica1]

plus all the work that helps you learn all this for me lol

[@user-sv6hl4sv9u]

This tutorial is really helpful so please add some more about combined circuits.

[@stepbystepscience]

Thank you, I've noted your request

[@kongmode]

I love you, like i spent hours trying to find this type of explanation

[@stepbystepscience]

Great that you found it helpful

[@MM0SDK]

You're the best tutorial on KZbin. Excellent.

[@stepbystepscience]

Very nice of you to say! Thanks.

[@B5Blue1968]

Your video's are very helpful, you break everything down very nicely, Thank you!

[@stepbystepscience]

That is why it is called Step-By-Step Science. You can see a complete listing of my videos at www.stepbystepscience.com

[@ArifHossain-sn7eu]

best explanation. please do more exercises

[@sircliff323]

being able to teach is a skill itself so well done. many know it all but can't communicate on a learner level

[@giddy222]

just to let you know that you doing things step by step is just superb!

[@jillewane6200]

This was a lot of help

[@stepbystepscience]

Great and thanks for letting me know.

[@jayyupinhu8710]

Thank you for the video! very clear and easy to follow! and helped me to understand resistor more! Keep up with the good work!

[@stepbystepscience]

Jay Yupin Hu Thank you for the positive comment, Yes I think if you go through the whole thing step by step then it is not too difficult.

[@TheKingOfHeartsIV]

10:00 Thank you! I haven't found a video that explained voltage drop in a parallel circuit with more than 1 resistor in a branch.

[@stepbystepscience]

Glad it helped. Thanks for the nice comment!

[@carlosrayo4412]

Thank you for sharing your knowledge,very helpful,God bless you.

[@stepbystepscience]

So nice of you, you're very welcome.

[@roxyqueen5076]

This was the simplest explanation thank you very much for your video I know I'm going to pass my test now thank you also I have a much better understanding

[@stepbystepscience]

You are very welcome, thank you very much for watching and commenting.

[@mkilmer7333]

This is awesome stuff, thank you...I wired up a bread board with 4 different colored LEDs in a parallel circuit, each with it's own resistor, and I used these techniques to analyze all the elements...I guess my main takeaway is that resistors of the same value of Ohms can incur different voltage drops across them, depending on the other elements in their branch...so do resistors absorb whatever voltage is necessary to balance out the circuit, 'up-to' their maximum tolerance?

[@naderhumood1199]

Aptly clear and nice vedio Sir.....👍

[@Faamu75]

This video was flawless.

[@stepbystepscience]

Thanks

[@East_Coast_Toasty_Boy]

You said .68 rather that .86 for It The first time around, haha.

[@golamsarwar7464]

tnxx sir from bangladesh

[@stepbystepscience]

You are welcome, from Berlin, Germany

[@jillewane6200]

Thank you so much

[@stepbystepscience]

You are very welcome.

[@arundhutiroy6651]

Your video is fabulous , a good job ! You really solved my doubt. Thank you sooooooo much.

[@stepbystepscience]

Great, thanks for watching and commenting.

[@SunnyChopper]

Better explained than my UIUC professor.

[@stepbystepscience]

What is the UIUC?

[@SunnyChopper]

Step-by-Step Science University of Illinois at Urbana-Champaign

[@MegaBdboy]

Can you do some problems with power sources that have internal resistance and some problems with power and energy? That would be very helpful.Thanks

[@rolandevangelistalabajaj.r6721]

good job

[@stepbystepscience]

Thanks!

[@neurobiogirl]

Thank you so much!! Your videos have been a great help!

[@stepbystepscience]

+neurobiogirl thanks for watching and commenting.

[@Mike-gy2hh]

helped me pass my mid-term, thanks!!!!

[@stepbystepscience]

great and thanks for letting me know! You can see a listing of all my videos at www.stepbystepscience.com

[@voettbaltg]

Seeing it done by someone is 10 times more effective than just having it explained

[@stepbystepscience]

Glad to hear it. Thanks for the comment.

[@nolimararce557]

For example what if the R2 is unknown, how would you solve for it? Thanks a lot

[@stepbystepscience]

There a couple of possibilities: you need the current through the branch that contains R2 or maybe you know the voltage all of the way across the branch that contains branch that contains R2 and you know the voltage across R1.

[@salahsana3481]

Merci.

[@stepbystepscience]

Gerne

[@annahkerubo6371]

Another great video thanks so much

[@stepbystepscience]

You are very welcome

[@syedshahabaazahmed6544]

thank you very much

[@JoseGonzalez-qd7kb]

How would you find R1 if you are missing that value?

[@stepbystepscience]

I am not sure how your problem is set up but then you would need to be able to figure out the current through R1 and the voltage across it.

[@bonganiperfect9760]

thank u very much . you help me a lot , u did a good job

[@abdullahiabdi2491]

Following ur previous reply so in 8.39 y haven't taken 5 volts as the total and search for the current in Resistor 3 like in the case of the previous video that i have refered to you coz u said 24 iz de total current(lecture 4 )

[@michaelfrench1657]

Why doesn't product over sum work for 2 resistors in parallel here? 10x14 over 10+14.

[@mikangela_]

Isn't 0.36*9 = 3.24? I tried it on almost every calculator I have and it says that. I even tried the number not rounded off and I got 3.21 Why is it 3.20?

[@stepbystepscience]

It is just rounding or a minor eror on my part. Don't get to hung up on this minor difference. Does the vidoe help you with the concepts? You can see a listing of all my vidoes at www.stepbystepscience.com

[@Archivekeeper10]

what is that picture on your cover!

[@user-yh9mc3ml1v]

What about if im asked to get the current for R=5 ? I had that question in my quiz

[@stepbystepscience]

I think I just shoe that in the video.....?????

[@ahmadattai7574]

thanks for this helpful video

[@stepbystepscience]

You are very welcome and thank you for commenting.

[@sullivancorozajr.1514]

THX U SIR

[@stepbystepscience]

You very welcome!

[@ahmedbig1356]

thanks for good videos

[@ricardomelo6024]

thanks, help me a lot!

[@alexandercozens4008]

thank you, helped me out :)

[@stepbystepscience]

Great, I am glad it did, thanks for commenting.

[@cleonlusbo231]

awesome.

[@maythamibrahim9751]

wow if only my professor taught this like you do.

[@stepbystepscience]

Maytham Ibrahim As I like to say, everything step by step. Thanks for commenting.

[@basictips1971]

what is the voltage drop in R3?

[@stepbystepscience]

It is in the video.

[@josephdouglas3087]

Look at I1,2. You have a DOUBLE "=" sign. Thanks.

[@gringoip1874]

1 divided by 0.171 = 5.84, is it not?

[@stepbystepscience]

Yes, but the real question is do you understand how combined circuits work? The one hundredth of an Ohm really makes no difference in this case.

[@vigneshalapati7844]

sir, i have a doubt , you said that in series circuits ,current through each resistor =total current please clear my doubt!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[@vigneshalapati7844]

I(1,2)=0.86A*0.86A==1.72A

[@vigneshalapati7844]

how V(1,2)=V(T) they are in series ,,YOU said that in series,, sum of voltage through each resistor=total voltage in the circuit then how did you write V(1,2)=V(T)

[@stepbystepscience]

The current comes out of the battery, so to speak, that is the total current. If resistors are in series then the current has no other place to go except through each of the resistors. That is just the way it is!

[@stepbystepscience]

One and two are in series the voltage across one plus the voltage across two is equal to the total voltage (the voltage of the battery).

[@kevonakalilbamson9810]

i found something wrong in the last part for finding the voltage dop across

[@stepbystepscience]

OK

[@Mikey123599]

Thank you :)

[@stepbystepscience]

You are very welcome, thanks for commenting! You can see a listing of all my videos at my website, www.stepbystepscience.com

[@stacygriffin88]

ok this one confused me a bit

[@stepbystepscience]

+Stacy Griffin It can be a little confusing. Try it again. You can see a listing of all my videos at my website, www.stepbystepscience.com

[@elx_villacruelmalthaalear.6325]

Aaaassaaasja ty

[@stepbystepscience]

You're welcome!

[@mobrulesall9998]

Turn the diagram around. silly to have it like this.

[@stepbystepscience]

Around how?????

[@mobrulesall9998]

The markings for each element in the circuit. Bit awkward looking at it when the values are sideways haha. But whatever, you do you

[@dutcher517]

Great videos but man, work on that vocal fry!

[@juansplaso]

b ennett

[@stepbystepscience]

What is a b ennett?

[@jc3375]

can you please narrate without the croaking voice, really annoying

[@tonybeneventi2002]

Thank you so much

[@stepbystepscience]

You are very welcome, thanks for commenting.