Nodal Analysis Example Problem #1: Two Voltage Sources

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  • Опубликовано: 18 янв 2025

Комментарии • 99

  • @Engineer4Free
    @Engineer4Free  3 года назад +7

    Scroll up and hit that 👍 button if you found this video helpful!
    Full Circuit Analysis playlist is here: ruclips.net/p/PLOAuB8dR35ocf9Typ1iX9NRmX0V04UYfQ

  • @bexleynessia7114
    @bexleynessia7114 2 года назад +8

    I hate long video tutorial and yours is just so brief and simple easy to understand and fast to learn a big topic in less then 10 minutes thank you for this so helpful

  • @md.abdullahalrafi6496
    @md.abdullahalrafi6496 3 года назад +67

    100x better than my university teacher.

  • @isaacmwangi7038
    @isaacmwangi7038 Год назад +80

    Thanks, though you have made a mistake at kcL B , because if you multiply -4(2-vB)
    You are supposed to get ( -8+4vB)
    So that you get =2vB-VA+vB-8+4vB
    If you solve further you get vA=7vB-8

    • @stacybatabe3843
      @stacybatabe3843 Год назад +10

      Thank God i wasn't mistaken

    • @siul2
      @siul2 Год назад +4

      bro no wonder I was so confused

  • @spoon4974
    @spoon4974 Год назад +4

    This one and the explanation made Nodal analysis so much more understandable

  • @ChiefYOUtuber
    @ChiefYOUtuber 3 года назад +66

    7:02 For the second KCL you did an algebraic mistake. It is not +4 but -4

  • @Sarathy_303
    @Sarathy_303 Год назад +4

    This guy made my day, and now i can teach my girlfriend!
    You get a subscription.

  • @AlexTheTech
    @AlexTheTech 11 месяцев назад +7

    5:05 Its supposed to be -18+6va, because negative times negative becomes a positive.

  • @antoni3071
    @antoni3071 Год назад

    You do amazing job! I am going through the playlist and smashing like on every video, cuz you deserve some positive feedback for this work

  • @santucigod
    @santucigod Год назад +3

    Totally amazing. I really could understand thanks to you.

  • @Watatsuu
    @Watatsuu 4 месяца назад

    thankyou you are better than teach in my prof.

  • @cosmos8366
    @cosmos8366 2 года назад +43

    In KCL - A you multiplied -6 by -va which you have as -6VA which should be +6VA . If it was -6VA you would not have 13VA but instead just have 1VA.. to get 13VA it has to be positive.

    • @bibitei8935
      @bibitei8935 2 года назад +11

      Thanks i thought i was tripping

    • @cordelllitus2630
      @cordelllitus2630 2 года назад +1

      distribute the negative first then it would be -3+VA

  • @electriccircuits19
    @electriccircuits19 2 года назад +3

    *“We learn more by looking for the answer to a question and not finding it than we do from learning the answer itself.”*

  • @noelleemma3043
    @noelleemma3043 3 года назад +11

    -6 *-Va is +6va

  • @IceBelly
    @IceBelly 2 года назад

    Thanks for this video , my guy saving my assignment rn

  • @MaxwellKampindu
    @MaxwellKampindu 8 месяцев назад

    Life made simple thank you very much.. very simplified

  • @rotimiamudeli
    @rotimiamudeli 10 месяцев назад +2

    In NIGERIA, lecturers don't teach. They just give course outlines then ask you to go study yourself with brief explanations.

  • @officialfayomi
    @officialfayomi Год назад +4

    Am i the only one who noticed that he made a mistake in KCL B, while subtracting I5 from I4 and I3. He changed I5 sign from minus to plus.

  • @mars8499
    @mars8499 Год назад +1

    Your voice is soothing

  • @umairawan658
    @umairawan658 10 месяцев назад

    Much informative vid keep it up👍

  • @jamaicagonzaga7887
    @jamaicagonzaga7887 3 года назад +2

    Sir thank you so much, you saved my day....I already subscribed your channel....Thank you and God Bless

    • @Engineer4Free
      @Engineer4Free  2 года назад +1

      You're welcome!! Thanks for watching =)

  • @KEERTHANACHIRRA-p1t
    @KEERTHANACHIRRA-p1t Год назад

    TQ for this sir..I am able to understand ur calsses easily

  • @shizaalmas
    @shizaalmas 3 года назад

    Exellent .i visit a lot of channel bit your channel is best .you solve my confusion

  • @wizardslab4326
    @wizardslab4326 3 месяца назад

    you made this easy for me thank you

  • @cosmos8366
    @cosmos8366 2 года назад +5

    I like how you used the fraction multiplied by 7 for less rounding issues

  • @Himaperera14
    @Himaperera14 3 месяца назад

    Thank u so soo much . this helped alot❤❤

  • @Pragmatic80
    @Pragmatic80 Год назад +1

    I'm boggled a little bit on 7:51
    How is 2VB + VB - 4VB = 7VB
    Shouldn't it be -VB?

    • @zackify187
      @zackify187 Год назад

      VB counts as 1. Same as how X counts as 1.

  • @wesleytissmah6516
    @wesleytissmah6516 10 месяцев назад

    Thanks understood clearly ❤

  • @JacobAmoroso-s4k
    @JacobAmoroso-s4k 3 месяца назад

    Why does my professor only use the circle voltage sources? The four-line ones look so much better when drawing. The art classes are in another building, man.

  • @merrysanjenbam603
    @merrysanjenbam603 3 года назад +5

    Hi, I like your teaching but i have one doubt in this video. I want to know why i3 goes on right side? can't it go to left too? Please reply! much appreciated

    • @Engineer4Free
      @Engineer4Free  3 года назад +7

      I just assumed a direction for i3, in this case it was to the right. When I drew it, it was an unknown, and I could have assumed either direction. If i3 ended up being a negative vale, then that would have told us that it was in fact pointing the other direction. However, in this example, we calculated i3 to be positive, so our assumed direction was correct.

    • @merrysanjenbam603
      @merrysanjenbam603 3 года назад +1

      @@Engineer4Free Thanks a lot . Subscribed your channel. I hope your channel will help others a lot too Keep it up

    • @HardwareNinja
      @HardwareNinja 3 года назад

      Hi Merry,
      If you're interested in electrical/electronics engineering, we're building a channel to help students and professionals prepare for job interviews with real world questions. We'd love it if you could swing by. Also, our LinkedIn is: www.linkedin.com/company/hardware-ninja

  • @nusratnoor8440
    @nusratnoor8440 Год назад

    May God bless you 🙏❤ bro

  • @ankitnigam4261
    @ankitnigam4261 3 года назад +2

    at kcl b the final equation is wrong

  • @ARR0W
    @ARR0W 3 месяца назад +1

    KCL A is wrong, it isnt 13Va but 3Va. -6Va + 4Va + 3Va = -2Va + 3Va = Va

  • @kennethkngoma1262
    @kennethkngoma1262 10 месяцев назад

    Wow, Thank you so much

  • @lagunacorona
    @lagunacorona Год назад +2

    Can you do one based on wheatstone bridge? also it seems from other comments on other videos that professors leave specific details out to "appreciate how to get the right answer" people don't have time to mess around.

  • @amandragon8919
    @amandragon8919 Год назад

    But how do you get KCL A -6 to -18 after simplify? may i know?

  • @layibashabir
    @layibashabir Год назад

    How to know the currents are out or in in direction please reply me soon

  • @kozuta8858
    @kozuta8858 Год назад

    what if the voltage source is flipped and negative sign is above?

  • @lagunacorona
    @lagunacorona Год назад

    I dont understand why i3 on one side is traveling in and is respresented as a positive ? and on the other set on node be as a negative ??? what is going on??

  • @tomitonaomy9666
    @tomitonaomy9666 Год назад

    Wow 🎉 thanks so much

  • @logithkumar5630
    @logithkumar5630 5 месяцев назад

    Anyone clarify me if we consider I under 2 in opposite direction wether the equation Kcl A is messed or not

  • @atiqnajmi1163
    @atiqnajmi1163 8 месяцев назад

    Nice video

  • @micahjessy4736
    @micahjessy4736 2 года назад

    Thanks for this video

  • @kankanar
    @kankanar 27 дней назад

    Here no 13 Va but only Va 5:08

  • @kankanar
    @kankanar 27 дней назад

    -6(3-Va)=-18+6Va😢😢 4:43

  • @siddharthpg2919
    @siddharthpg2919 Год назад

    thank you so much !!

  • @mohammadhoseinrivandi5657
    @mohammadhoseinrivandi5657 3 года назад

    Hi,I have a problem and i can't solve it.Is there a way to send the problem so that you help me out?

  • @onyxtechnologyx
    @onyxtechnologyx Год назад

    I love u so much dude

  • @mightygod-bw3cn
    @mightygod-bw3cn 3 года назад

    4:11 how to you know what to multiple with like when u did with 12

  • @EdwardTieku
    @EdwardTieku Год назад

    Erm how is -6x-3va still a -18va at kcl A

  • @nacht3894
    @nacht3894 Год назад

    Thank you sir

  • @almiaangelol.9059
    @almiaangelol.9059 3 года назад

    Hi how to solve if the 2 ohm's is unknown?
    Hope you notice

  • @Incomplete_artist
    @Incomplete_artist 3 года назад +1

    How we find common dinominator?

    • @augustussinclair1626
      @augustussinclair1626 3 года назад +2

      it's quite easy, actually! it's elementary level maths; basically you single out all the numbers on the bottoms of the fractions, line them up and start dividing with numbers in hopes of getting each number to a 1.
      for example, if you have 1, 2, 4 like in the Vb portion of the video - you ignore the 1 because it's already a one, so you have 2 and 4 left. both are divisible by 2, which - when divided - leaves you with a 1 and a 2.
      then you divide them again with a 2 and the end result is three ones, with two twos you used to divide them with.
      then you multiply the numbers you used while dividing (aka 2 and 2 here) with one another, and the end result is your common denominator (4 in this case).
      hope i was able to help!

  • @tormentor2285
    @tormentor2285 3 года назад

    love you man

  • @FatimaZohra-hn3vi
    @FatimaZohra-hn3vi 3 года назад

    What if we have only one voltage source

  • @amelia-ou9gn
    @amelia-ou9gn 3 месяца назад

    THANKS

  • @zackify187
    @zackify187 Год назад

    why is it not -va + 7vb = 8

  • @kristoffermeyer8339
    @kristoffermeyer8339 Год назад

    The results are wrong i'm afraid. You made sign destribution mistake in the sign distribution in KCL A and B.

  • @adriang.batarabsee3c363
    @adriang.batarabsee3c363 3 года назад

    What happened to 7Vb?

  • @rpain-tt9dp
    @rpain-tt9dp Год назад

    you should use mesh hhere

  • @nixnocar9004
    @nixnocar9004 2 года назад +1

    i think that -6Vb is +6Vb

  • @nixnocar9004
    @nixnocar9004 2 года назад

    sorry the -6Va i mean is +6Va

  • @joeaberman449
    @joeaberman449 Год назад +1

    minute 7:30 big mistake does not correspond to previous level throw you out of loop!!!!!!!!!!! review review

  • @faziltaftani8250
    @faziltaftani8250 Год назад

    Which one of you guys student at university of lahor
    Our sir is wallhi azab😶

  • @nixnocar9004
    @nixnocar9004 2 года назад

    to come up 13Va

  • @AniMedicine737
    @AniMedicine737 2 года назад

    Is it just me or he change the KCL at I⁵

  • @micheletjean-charles9966
    @micheletjean-charles9966 8 месяцев назад

    VB should be 1.32v

  • @seth2039
    @seth2039 3 года назад

    huge

  • @mimiizabil4519
    @mimiizabil4519 3 года назад +2

    ماتقدرش تهدر عربي

    • @mahadomar3089
      @mahadomar3089 3 года назад

      ابحث عن عربي دي انجليزي.

  • @VRS876
    @VRS876 Год назад

    Don't put this type of videos

  • @liamferguson4199
    @liamferguson4199 2 месяца назад

    All I’ve seen on this guys videos is that he makes mistakes in almost every single video. Can’t trust his teaching

  • @mimiizabil4519
    @mimiizabil4519 3 года назад

    Speak arabe

  • @pedrosmith7919
    @pedrosmith7919 3 месяца назад

    HOW DO YOU GET 7VB WHEN 1VB+2VB = 3VB (+)-4 YOU WOULD THINK THAT WOULD BE -1 NOT 7