Solving Circuit Problems using Kirchhoff's Rules

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  • Опубліковано 1 січ 2018
  • Physics Ninja shows you how to setup up Kirchhoff's laws for a multi-loop circuit and solve for the unknown currents. This circuit has multiple voltage sources and cannot be simplified using resistors in parallel and in series.

КОМЕНТАРІ • 304

  • @elliotluedtke7630
    @elliotluedtke7630 4 місяці тому +18

    Holy god, words cannot express how helpful and useful this lecture was. Men and women like you drive humanity forward. I wish you nothing but good luck in the future. God bless you.

  • @loganstone2862
    @loganstone2862 4 роки тому +355

    why do i bother paying 34k/yr in tuition for a professor that couldnt teach me what you did in 19 minutes? Thank you Physics Ninja

    • @PhysicsNinja
      @PhysicsNinja  4 роки тому +35

      Thanks for watching!

    • @rebwar_ai
      @rebwar_ai 2 роки тому

      ua-cam.com/video/SEUtgpShfIs/v-deo.html

    • @santanuhalder4188
      @santanuhalder4188 Рік тому +23

      During our times there was no internet and we used to depend on our teacher. We use to go for exam without understanding properly. This generation is very lucky.

    • @BeekersSqueakers
      @BeekersSqueakers Рік тому +5

      Where are you attending that is that much per year? Thats 4 times what I'm paying in tuition at my State University. Thats the full cost of my entire degree.
      Unless your going to a world class university, you're getting ripped off.

    • @democracyforall
      @democracyforall Рік тому +1

      @@PhysicsNinja Man I did my degree in Engineer now been working as electrician etc but where do we find such things in real life? Can you give an example of such a doubel source DC voltage in a single circuit anywhere? If not then what was the point of learning all this stuff?

  • @emperor_talon4200
    @emperor_talon4200 3 роки тому +79

    This is literally the best physics lecture I’ve gotten in physics so far! Thank you so much!

    • @PhysicsNinja
      @PhysicsNinja  3 роки тому +4

      Thank you so much for the kind words.

    • @worklikehell3274
      @worklikehell3274 3 місяці тому +1

      @@PhysicsNinja thank you for telling me which my teacher couldn't do in 2fuckin years

  • @gordonloo2867
    @gordonloo2867 3 роки тому +27

    After 3 videos on this topic, yours is the one that helped me finally get the hang of the rules. Thanks!

  • @lea-anon
    @lea-anon 6 місяців тому +12

    I was struggling with Kirschoff's Law but this really made me realize how simple it is! Thank u mr. ninja appreciate it

  • @niroos6819
    @niroos6819 5 років тому +76

    i love how enthusiastic you are about this
    thanks a ton for making it simpler

  • @r3dy627
    @r3dy627 Рік тому +10

    I really appreciate this video. I appreciated you breaking things down and explaining very simply from the beginning what we are, you helped me understand how you can "walk" around the loop in one direction and have the current going in a different direction. My grade and more importantly my understanding have been improved as a result of your work. Thank you!

  • @dogle367
    @dogle367 2 роки тому +2

    I love you. Seriously. It's amazing how fast things can click when they're explained well. Thank you!

  • @taladiv3415
    @taladiv3415 3 роки тому +29

    I like the energy and flow in these videos. 💪

  • @user-ki2cl9xe8z
    @user-ki2cl9xe8z 9 місяців тому +1

    My GROOVY Bro... Watching this takes me way...way...way back to high school electronics. They barely had hand-held calculators back then. I barely got through with a "D". I absolutely admire your ability to minipulate those equations I struggled horribly with. The way I'd do it is...set-up the circuit in reality, throw the switch, then jump out the window and wait for whatever battery or resistor blows-up first. (Repeat process 3-times). Increase resistor wattage rating each time.) The Professor.

  • @骗
    @骗 13 днів тому

    this channel has been a lifesaver

  • @jamieblankenship1942
    @jamieblankenship1942 2 роки тому +2

    You have the most engaging teaching voice. It's as if I am at a fighting match but for physics! Love it! :)

  • @JustinHatter
    @JustinHatter 2 місяці тому

    Learned KCL & KVL a while back, this served as a great review for me, keep up the great work!

  • @philipjohn1338
    @philipjohn1338 2 роки тому +2

    Watched hundreds of videos but this one makes the most sense.

  • @im_jenkins
    @im_jenkins 5 років тому +40

    I learned more in this 20 minute vid than my hour long class. Well done

  • @TaeTae-bo9cv
    @TaeTae-bo9cv 3 роки тому +2

    Thank you very much! You've cleared all the questions in my mind regarding this topic.

  • @texasnewt
    @texasnewt Рік тому +4

    Good 'circuit sense' explanations combined with KCL/KVL loop analysis to derive a system of three equations in three unknowns (the three loop currents). Also, good follow through on solving system of equations by substitution for elimination of variables. The bedrock of electrical circuit analysis. Mesh analysis techniques can be easily mastered later with matrix algebra used to solve more complex systems -- kudos for your common sense approach, which I think is very helpful for developing a sense of what's going on in the circuit!

  • @study_101
    @study_101 Рік тому +2

    literally saved my time, such a simple and detailed explanation! Gottta give this video a like, thank you!!

  • @curesnow6493
    @curesnow6493 4 роки тому +7

    Thank you so much! I wish I have a professor like you

  • @npc6212
    @npc6212 3 роки тому +18

    straightfoward, subscribed.

    • @rebwar_ai
      @rebwar_ai 2 роки тому

      ua-cam.com/video/SEUtgpShfIs/v-deo.html

  • @lavk2777
    @lavk2777 29 днів тому +1

    I feel like I stumbled upon a pot of gold. You're seriously the greatest. Thank you so much.

  • @Ibrahim-tq8hv
    @Ibrahim-tq8hv 4 місяці тому +1

    Three days stuck on this topic this man shows out like fucking batman and saves the day!

  • @shayannassabi572
    @shayannassabi572 4 роки тому +20

    My teacher at school doesn’t know how to teach. You are amazing! Physics ninja to the rescue!

    • @lator1941
      @lator1941 3 роки тому +1

      I think we all have the same kind of teachers.

  • @elizahlakao5539
    @elizahlakao5539 Рік тому +6

    I really understand that video. This video had perfectly clarified some of my doubts. I really love it. Thank you Physics Ninja.

    • @nasthehustler2539
      @nasthehustler2539 Рік тому

      I have all the information from the book but just 😢 can't trust my methods
      I'm also grateful I found this video

  • @kasiorap
    @kasiorap 3 роки тому +4

    ten seconds into the video and i love this man already

  • @ebbyluis7090
    @ebbyluis7090 10 місяців тому +1

    Just want to say thanks for this great Video. Everything is simplified and very easy to understand.

  • @annettathomas6757
    @annettathomas6757 4 роки тому +1

    This topic was always super confusing for me, but I finally get it now. Thanks a lot!!!

  • @madboycal7859
    @madboycal7859 Рік тому +1

    This concept did not click until I watched this video. Thanks Physics Niinja 😎

  • @jeanpaultrant6001
    @jeanpaultrant6001 Рік тому +1

    What an explanation I didnt understand this thing for a whole term now I know it it turns out to be easy

  • @ahmedawesome4406
    @ahmedawesome4406 4 роки тому +1

    Very nice explanation bro... Love from an Alevels student of Pakistan 🇵🇰 👌🏻😍❤️

  • @strawberrysingsthings
    @strawberrysingsthings Рік тому +2

    Wow! I can't believe it was that simple. Thank you so much!

  • @teerthjain9795
    @teerthjain9795 3 роки тому +6

    Sir, your energy was so good in explaning love from india

  • @rebekahm6672
    @rebekahm6672 2 місяці тому

    I like my professor but I was unable to understand this concept for weeks and in the first five minutes of your video I get what I was doing wrong. Thank you.

    • @Linogiven-O
      @Linogiven-O 2 місяці тому

      School teachers are stupid. they don't teach properly.

  • @simonmburu6892
    @simonmburu6892 3 роки тому +7

    I have not yet had a class on these multiloop circuits but I've already understood the concept....thanks to you physics ninja

  • @arnelakarovic3934
    @arnelakarovic3934 3 роки тому

    Thank you for this explanation !!! Hopefully I will not fail my exam tomorrow !! Fingers crossed !

  • @blackchicken2243
    @blackchicken2243 2 роки тому +1

    Bro your algebra skills are on point respect

  • @adhipkoshy5982
    @adhipkoshy5982 4 роки тому +2

    Dude, Thanks a lot for this awesome explanation!!

  • @willbooker6287
    @willbooker6287 4 місяці тому +1

    For anyone who has taken linear algebra - you can do all the algebra with matrix row reduction! much neater to work through that way

  • @durgahimabindudwarampudi6864
    @durgahimabindudwarampudi6864 3 роки тому

    I understand it very well , and
    I want to tell u that u have a lot of patience I was so messy with those three equation but not now anyway thanks sir

  • @johnq4841
    @johnq4841 3 роки тому

    thank you so much, i literally spend 2 days to figure this out.

  • @astralnovaNeel2002
    @astralnovaNeel2002 4 роки тому

    Thanks a lot Ninja...This video has helped me a lot....You are doing really good.

  • @masangabrenda5441
    @masangabrenda5441 Рік тому +1

    This video is just awesome. I like your explaination sir God bless you

  • @hrprtbedi
    @hrprtbedi 5 років тому +1

    thanks a lot sir! a real learning early morning is best!

  • @hammadshahid5464
    @hammadshahid5464 2 роки тому +1

    Amazing video, extremely helpful

  • @LeLibanaisEnRoueLibre
    @LeLibanaisEnRoueLibre 7 місяців тому +1

    Just wanna say: thx a lot. Friday is my final in introduction to physics and Imma give some news next week when I get my grade. But thx I finally able to learn something so simple! It’s quite humiliating but God it feels good!

  • @brianbundotich2857
    @brianbundotich2857 3 роки тому +1

    thanks, easy explanation didn't even have to finish the whole video

  • @azikiwewilliams3187
    @azikiwewilliams3187 6 місяців тому

    Question regarding resistors being placed horizontally: is the positive side always placed on the right side and the negative always placed on the left side of them?

  • @difadli2470
    @difadli2470 Рік тому

    16:35 i'm kinda confused on this part, why does the value 2 in the equation its in the i1 (the substitute)beside denominator?, and not below the substitute ? (sorry for my bad english)

  • @a-ketoglutarate
    @a-ketoglutarate Рік тому +3

    I FINALLY LEARNED HOW TO DO THIS BECAUSE OF THIS VIDEO THANK YOU ! ! ! ! ! ! ! !

  • @trackfieldworld_s.g8767
    @trackfieldworld_s.g8767 10 місяців тому

    At junction d, how do you know the correct direction of flow of current

  • @venkat4137
    @venkat4137 3 роки тому +1

    Well explained and you deserve thumpsup and subscribed

  • @kgaogelomoholane6988
    @kgaogelomoholane6988 3 роки тому

    very helpful. keep doing complex examples

  • @vahagnmelikyan2906
    @vahagnmelikyan2906 4 роки тому

    So what happened with the rule if the amps is minus than you have to change current direction?

  • @anuraghalder9399
    @anuraghalder9399 4 роки тому +16

    Beautifully explained. Thank you so much.

  • @IDKMUFFINKID
    @IDKMUFFINKID 2 роки тому +1

    Thanks for the help. I was stuck not knowing how to do my lab.

  • @Den_76226
    @Den_76226 2 роки тому

    Best video I've watched on this. Thank you

  • @DeniceKnuts
    @DeniceKnuts 4 роки тому +1

    This video is great at explaining this concept.

  • @divyas5195
    @divyas5195 3 роки тому +1

    Thank you sir.u were clear my doubt🙏

  • @arsei8389
    @arsei8389 29 днів тому

    That was really really helpful, you're awesome

  • @bytecode5834
    @bytecode5834 3 місяці тому +1

    Fantastic video, thanks for sharing you knowledge

  • @guddukumarsingh6437
    @guddukumarsingh6437 4 роки тому

    Great and simple way to teach.

  • @samuelogunsina9191
    @samuelogunsina9191 2 роки тому

    Umm can anyone tell me where the current I2 is coming from cuz I don't see a battery nearby to provide that current

  • @amrotchi8668
    @amrotchi8668 4 роки тому

    Very clear explanation thanks a lot 😍

  • @douglasfurtek7637
    @douglasfurtek7637 3 місяці тому +1

    You have made me a loyal fan. Great job with the explanation!

  • @muslihabdi8968
    @muslihabdi8968 3 роки тому +1

    You literally saved my day .Thanks

  • @are2515
    @are2515 5 місяців тому

    hi! this video was so helpful! I was wondering where the current in the middle of the circuit originates from? Is it from the 10 V battery? Thanks!

  • @precioustiisetso1907
    @precioustiisetso1907 Рік тому

    It was so so helpful your lesson!!😍🔥🔥🔥

  • @bivianalie5036
    @bivianalie5036 5 років тому +21

    this is video is so underrated!!! i finally understand this, thank you!

  • @Bianchi77
    @Bianchi77 11 місяців тому

    Nice video, well done, thank you for sharing it with us :)

  • @alberteinstein791
    @alberteinstein791 Рік тому +2

    Thanks a lot for explaining very clearly

  • @Starwarriorzerg
    @Starwarriorzerg 4 місяці тому

    This was amazing thx you so much !! great lecture :D

  • @OakVolcano7858
    @OakVolcano7858 4 місяці тому +1

    i think you may have just actually saved my life

  • @serene9532
    @serene9532 6 років тому +5

    Very clean explanation, loved it!

  • @user-jr3fd6tq3h
    @user-jr3fd6tq3h Рік тому +1

    Thank you so much for that explanation 😊

  • @Suryanshsingh7085
    @Suryanshsingh7085 3 роки тому +1

    Amazing, it was a quick and exact explanation of a lengthy method. 🚩🚩🚩🚩🚩

  • @nirajacharyaa
    @nirajacharyaa 4 роки тому

    Thanks man. You saved the day.👍

  • @SeanMcDonnell33
    @SeanMcDonnell33 6 місяців тому

    it seems like the 20V and 10V batteries would be fighting eachother. does the 20V battery really just overpower the 10V and allow current to flow through the 10V battery backwards?

  • @begumdurmus1952
    @begumdurmus1952 2 місяці тому

    how we decide how many current we should put

  • @zaintsee4072
    @zaintsee4072 2 роки тому +1

    What if the other 2 voltages are also unknown?

  • @edipnecdetatalay6495
    @edipnecdetatalay6495 5 років тому +2

    After 3 another channel best one was that thanks for everything :D . I believe tomorrow ı ll got ıt that fınal exam.

  • @utmw
    @utmw 3 місяці тому +1

    life saving, thank you!

  • @jameswilliam5487
    @jameswilliam5487 3 роки тому +1

    Now am back on track thank you

  • @leinadpq9527
    @leinadpq9527 Рік тому +1

    i notice a mistake in 11:50 where you transposed the -10 and -2I_1 and the -10's sign stays negative. Isn't it suppose to be a positive now?

  • @user-ep5rm8mx9r
    @user-ep5rm8mx9r 6 місяців тому +1

    Excellent explanation thanks

  • @abdulrehmanakram.3030
    @abdulrehmanakram.3030 Рік тому +1

    nice sir, watching your video from Pakistan and your teaching method is very good.

  • @samuelpelletier1646
    @samuelpelletier1646 3 роки тому +1

    Thanks you you helped me passed my semester

  • @SS-pn7ss
    @SS-pn7ss Рік тому +2

    Thank you so much for the helpful video

  • @ZivierMithi
    @ZivierMithi Рік тому +2

    thanks you made simple its easy to understand

  • @cherryclorox7717
    @cherryclorox7717 8 місяців тому

    This was so confusing for me at first but I finally get it. The one thing I don’t understand though still is why the direction of current doesn’t matter and how would you know if you guessed the wrong way

  • @tavishdharmani8274
    @tavishdharmani8274 3 роки тому +1

    Love from India 🇮🇳♥️ I'm in final school year and these explanations are helping me a lot

    • @PhysicsNinja
      @PhysicsNinja  3 роки тому

      Happy to help! Good luck with your studies.

  • @ZivierMithi
    @ZivierMithi Рік тому +2

    it will be a pleasure if yuo could made another one of most complicated and hard

  • @carolineseffen7458
    @carolineseffen7458 10 місяців тому +1

    Nice and amazing and very simplified video , thanks a lot

  • @AriAtarii
    @AriAtarii 3 роки тому +1

    I love you .it helped me so much .you just got a like and a sub

  • @wamakaghambi4477
    @wamakaghambi4477 Рік тому

    u are really something else great job

  • @user-te1fc5pq2w
    @user-te1fc5pq2w 10 місяців тому

    Wow I prefer this lecture it's very simple and understood ❤ thanks sir

  • @muhammadnasrullah4922
    @muhammadnasrullah4922 3 місяці тому

    thanxs a lot for giving a best idea

  • @BooktownBoy
    @BooktownBoy 3 роки тому +23

    You lost me at "Hi everybody" :/

  • @azizulislamakash5019
    @azizulislamakash5019 Рік тому

    That is absolutely amazing 💕

  • @Jimmyillusionz
    @Jimmyillusionz Рік тому

    In your 5 ohms resistor (horizontal) how can we know the positive and negative side of the resistor

    • @PhysicsNinja
      @PhysicsNinja  Рік тому

      to find which side has a higher electrical potential you need to find the direction of the current through that resistor. Positive current (as defined in physics) goes from higher potential to lower potential.

    • @Jimmyillusionz
      @Jimmyillusionz Рік тому

      @@PhysicsNinja understood. My lecturer made a 2 hours video about this and I couldn’t grasp a thing. You made me understand the concept with a few minutes video. Thank you 🙏

  • @hariaboii7591
    @hariaboii7591 3 роки тому

    how do i use to calculate this circuit using matrix and how do i arrange in matrix form, like how to arrange the 3 equations in the video in matrix form

    • @fredkirk7881
      @fredkirk7881 2 роки тому +1

      (a1 b1 c1, a2 b2 c2, a3 b3 c3) (x, y, z ) = ( a, b, c ) take the inverse of the 3x3 matrix on the other side and multiply