What are Resistance Reactance Impedance

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  • Опубліковано 31 січ 2025

КОМЕНТАРІ • 711

  • @X19-x5f
    @X19-x5f Рік тому +652

    I’m 60 years old and I have seen hundreds of videos on electronics. This is, undoubtedly, the best explanation I have ever seen. Subbed.

  • @levoleynik4899
    @levoleynik4899 11 місяців тому +81

    As Noah's 4,234 year old son, I have never seen an example as clear as this! Struggled understanding the concept before, now I can go and build the second tower of Babel without any difficulties. Subscribed!

  • @WoobyMe
    @WoobyMe Рік тому +141

    Im an ancient 493 year old man, and this is by far the great explanation i have ever seen across the centuries I have roamed this earth. Liked, subscribed, and rang the bell.

    • @jacobgriswold7215
      @jacobgriswold7215 Рік тому +18

      This is my kind of humor 💀

    • @Scrub_Lord-en7cq
      @Scrub_Lord-en7cq Рік тому

      @@jacobgriswold7215autistic humor

    • @AustinAdams
      @AustinAdams 6 місяців тому +4

      There are sooo many of these, finally someone made a joke about it! 🤣

    • @johnreymaliao3352
      @johnreymaliao3352 6 місяців тому

      Ur enough to evolved from monkey humanoid...😅

    • @Caesarbarca
      @Caesarbarca 24 дні тому

      vampire child of cain, finally you decided to get on with the technology, my respects to you ancient one, can i ask, was napoleon actually short?

  • @belo2902
    @belo2902 Рік тому +124

    In my 4 years of studying elecrical engineering, never seen such a excellent example like this

  • @vikingwind25
    @vikingwind25 7 місяців тому +16

    I am 72 years old, hold a 2 year degree in electronics and was a product manager for 28 years for RF and DC calibration products sold directly to NIST. I wish your videos were around when I was a young student. Learning would have been much easier. Great presentation! Thanks!

  • @AFatWhiteShark
    @AFatWhiteShark Рік тому +6

    For someone that genuinely never understood electrical engineering as a whole -honestly not even 1% of it- ...Thought it was above my capabilities.
    Thank you, for sure a new sub!

  • @joelonderee2872
    @joelonderee2872 Рік тому +89

    Excellent. All stuff I knew 50+ years ago as an engineering student, but forgot. Great re-education for me.I cannot wait to see more of your videos. The diaphragm and water wheel did the trick to making it understandable.

    • @Profmad
      @Profmad  Рік тому +1

      You are welcome. Keep in touch.

  • @B00BS.
    @B00BS. Рік тому +6

    By far the best video on this topic, period. Brilliant explanation, brilliant analogy, brilliant animation. The world needs more people like you. Hats off to you and your team for working this hard!

  • @rmcp5118
    @rmcp5118 Рік тому +12

    Nice explanation. Many moons ago when I was in the Navy electrician school they taught us "ELI the ICE man" to help us remember. Voltage leads current in an inductive circuit = ELI and current leads voltage in a capacitive = ICE. Of all the things I did forget that was one of the things which stuck.

    • @toddb930
      @toddb930 Рік тому +1

      Same with me. Except I was Air Force.
      One other thing I learned in my Air Force electronics training was that current flowed from negative to posiitive. After the AF I went to college to get an EE degree. There they taught current flow from positive to negative.

    • @rajkumarburada3799
      @rajkumarburada3799 9 місяців тому

      Another way is to remember - CIVIL- Capacitor - I current leads Voltage, Inductor (L) , current lags Voltage.

  • @Sanjay-eb6fe
    @Sanjay-eb6fe Рік тому +10

    If a picture can speak a thousand words, a video speaks a trillion. And this video in particular proves that these statements are true. Thanks 👍

  • @paules0099
    @paules0099 Рік тому +13

    This brought me back to my electronic engineering class! We were taught using the same analogy way back in 1980!

  • @CarlosR0driguez
    @CarlosR0driguez 5 днів тому

    Thank you. Best explanation I’ve heard in 42 years

  • @Omni-Sync
    @Omni-Sync 3 місяці тому +1

    Being an electrical undergrad, I appreciate your analogy of inductor and capacitor. The whole duration of this video never had an breaking point of the understanding.

  • @slayer30004
    @slayer30004 18 днів тому

    the best electricity channel in all of history , please keep posting

  • @sudhirpatil3434
    @sudhirpatil3434 Рік тому +35

    Man- you made thing's so simple for me to understand!
    Given the much complex nature of stuff to grasp - your animations really are worthwhile n efforts r laudable!!! 👍

  • @TheMoeP
    @TheMoeP 9 місяців тому +1

    Been working in electronics for 3 years now and I like watching these videos whenever I have those brain freezes and I need a refresher 🤣

  • @wenhaoyan1003
    @wenhaoyan1003 Рік тому +2

    I'm new to electronics, and some of the concepts are so hard to grasp. This is by far the best video I've seen, everything is SUPER easy to understand and extremely inspiring!

  • @freddievargas9315
    @freddievargas9315 7 місяців тому +1

    This is probably the most straight forward, concise and precise explanation of the topic. Amazing pedagogical material.

  • @alanturner1184
    @alanturner1184 3 місяці тому +1

    As a newbie to electronics as a hobby I am gaining so much knowledge and understanding on various topics I have watched. Thank you

  • @theodorecalvin4214
    @theodorecalvin4214 Рік тому +67

    45 years later, and I finally grok capacitors (in signal circuits, specifically). You did that. Thank you.

    • @Profmad
      @Profmad  Рік тому +3

      Thank you.

    • @mar-tin702
      @mar-tin702 Рік тому +5

      What is grok

    • @BA-pg4od
      @BA-pg4od Рік тому

      to understand profoundly and intuitively@@mar-tin702

    • @John.Doe.2025
      @John.Doe.2025 Рік тому +7

      @@mar-tin702 Old farter's language.
      *grok* - _verb groks, grokking, grokked [with obj.]_ understand (something) intuitively or by empathy _■ [no obj.]_ establish a rapport

    • @mrbrown6421
      @mrbrown6421 Рік тому

      @@10_ashutosh_01
      ...and what have you done for mankind, dear friend ?

  • @StuartThomasWinton
    @StuartThomasWinton Рік тому +4

    I wish my old electrical lecturer (RIP Charlie) had access to this video in 1976. The best description of impedance I have ever seen. Thanks and keep up the good work.

  • @Zonfeair
    @Zonfeair 28 днів тому

    Best explanation of resistance, reactance and impedance I have ever seen, thank you.

  • @francospagnolo1385
    @francospagnolo1385 Рік тому

    Very clear exposition, among so many contents useless to the dissemination of knowledge, here is something really well explained. Thank you very much

  • @kevinmclaren5517
    @kevinmclaren5517 Рік тому +2

    Thank you, thank you, thank you!! I needed this comparative visual so much. I was completely hung up on capacitive reactance until I watch the section on the elastic membrane. That's exactly what I needed to see to fit the pieces together in my head. Thank you so much

  • @fifiadera4682
    @fifiadera4682 9 днів тому +1

    THANK YOU. reading my hvac electricity and controls and having little visuals was making me crazy. IMEDATLY UNDERSTOOD with this video...... Makes me sad my book for school costed 150

  • @dkrishna2313
    @dkrishna2313 Рік тому +1

    Excellent description of the topics with easy to understand explanations accompanied by clear diagrams.

  • @sriramireddygangireddy8597
    @sriramireddygangireddy8597 9 місяців тому +1

    Very good animation and explanation. This video helps students to understand these concepts easily. Well done.

  • @kalli71
    @kalli71 Рік тому +11

    nicely put together, well done! I only recently learned the differences, but this is an excellent: what-is-what explanation. thank you

    • @Profmad
      @Profmad  Рік тому

      Awesome, thank you!

  • @needMoreInput
    @needMoreInput Рік тому +1

    Kids are so lucky with the amount of resources available to them. I am jelly, wish I had this stuff in my schooling.

  • @ic_0129
    @ic_0129 Рік тому

    This is perfect! I needed a refresher and you just summarized the last three chapters of my first semester so well. Saved me several hours :D

  • @69kamran21
    @69kamran21 Рік тому +5

    absolute knowledge and I bet that my teacher woudnt teach me like that, hats off to U Prof Mad

  • @randybuck4115
    @randybuck4115 18 днів тому

    the clarity of understanding , i received was incredible

  • @pauldiggs1087
    @pauldiggs1087 Рік тому +4

    This video was a refresher for me. I am going to introduce it to my HVAC/R class. Thanks professorM

    • @Profmad
      @Profmad  Рік тому

      Thank you soo much.

  • @isaacmarinobavaresco7397
    @isaacmarinobavaresco7397 Рік тому +1

    This video is certainly the best I have ever seen on this subject.
    I too devised this capacitor model of a membrane in a chamber many years ago and never seen anybody else using it before.
    I think that the only point you could improve is explaining that the paradoxical behavior of the current (or water) flowing ahead of the voltage (or pressure) being applied is due to the voltage stored inside the capacitor (or the elastic force of the stretched membrane). Of course that that does not work for the very first cycle.

  • @_dheerajgupta
    @_dheerajgupta Рік тому +5

    Loved the analogy with water flow. This video cleared alot of doubts i had. Thanks a lot👍

  • @RodSnocking350
    @RodSnocking350 Місяць тому

    I wish I could have seen this video 50 years ago when I was taking EE 101. I could understand how the magnetic fields in inductors could create inertia to resist the change in current flow vs voltage, but I could never visualize a physical system that would be comparable to a capacitor where flow would lead the force driving flow. Congratulations for explaining one.

  • @Robert-zl4yi
    @Robert-zl4yi Рік тому +15

    I'm a ghost from 1845, never in my 178 years of being dead have i seen a better explanation than this, thank you so much.

  • @audionmusic2787
    @audionmusic2787 Рік тому +2

    Ideal balance of brevity and completeness. Bravo.

  • @willwill1738
    @willwill1738 Рік тому

    Super!!🤪👍Ever I encounter so decent, well developed and made content - straight to the point and easy to understand. Prof please keep on!!!

  • @bsb770
    @bsb770 Рік тому

    Wow this is by far most the best I have seen so far. Sending to my kid 👦 right now!!

  • @otv88
    @otv88 Рік тому +12

    VERY well done. Never understood this stuff until now. Excellent visuals and explanation. Thank you very much.

    • @Profmad
      @Profmad  Рік тому

      Glad it was helpful!

  • @manojdhanji7776
    @manojdhanji7776 10 днів тому

    At running time 6:18 it is being explained that the nozzle decreases the water flow (keeping the pressure constant). Fluids when passing through constricting nozzles gain high velocity and experience a drop in pressure along side the walls of the nozzle - this is so that the mass flow rate remains constant (Bernoulli's principle). Overall the video is very good.

  • @lg2058
    @lg2058 Рік тому +1

    OMG this channel needs way many more subscribers

  • @Robby-Rob-Robertson-III
    @Robby-Rob-Robertson-III 11 місяців тому

    This was wonderful, thank you - best use of water analogies I've seen yet!

  • @LiveHappy76
    @LiveHappy76 Рік тому

    Absolutely top-notch material!! Simple, clear, memorable. Thank you! With content like this, Prof MAD will grow like MAD! Wait for it....

    • @Profmad
      @Profmad  Рік тому +1

      Much appreciated!

  • @rofikulislam1751
    @rofikulislam1751 Рік тому

    undoubtedly it is the best video on electronics that I have seen

  • @depresty
    @depresty Рік тому +1

    I'm fifth year electromechanical engineering student and this is the first time i see such a beautiful example to understand how impedance works. Thank you sir .

  • @kuvaleshy2784
    @kuvaleshy2784 3 місяці тому

    Excellent Explanation Sir. It is one of the simplest explanation. I never seen such a good explanation

  • @jonathanmartins7744
    @jonathanmartins7744 Рік тому +1

    Best explanation about impedance that I ever saw! Thank you!

    • @Profmad
      @Profmad  Рік тому

      You're very welcome!

  • @PrinceKumar-hh6yn
    @PrinceKumar-hh6yn Рік тому

    Your lectures have the ability to make anyone understand engineering

  • @Mohammadsohrab205
    @Mohammadsohrab205 Рік тому

    Excellent excellent excellent just amazing and great way to make us understand I have seen several videos but no one made us understand like this thank you so much 🎉
    Love from India

  • @davidsymalla4785
    @davidsymalla4785 Рік тому +11

    Best AC Analogy to date my brother! This is going to help a lot of people understand impedances! 😲😲😲😲😲😲😲😲

  • @hexbinoban6170
    @hexbinoban6170 Рік тому +4

    Very well explained using insightful animations/illustrations. 🦉

    • @Profmad
      @Profmad  Рік тому

      Thank you so much 😀

  • @እምዬኢትዮጵያንቂ-የ7ጐ
    @እምዬኢትዮጵያንቂ-የ7ጐ 6 місяців тому

    Amazing explanation indeed ! I have always been wondering what creates the lag and the lead. Now my questions are answered . Thank you!

  • @VndNvwYvvSvv
    @VndNvwYvvSvv Рік тому +2

    Resistance is the zeroth order reaction. Reactance is the first order derivative, in which an inductor opposes change in current with instantaneous change in voltage, and the capacitor resists change in voltage with instantaneous change in current. In brief, resistance is response to a constant. Reactance is a response change. Combining both reactive effects plus resistance, the sum is called impedance.

    • @13DKA-kg2fz
      @13DKA-kg2fz 3 місяці тому

      ...and you even managed to write "impedance" correctly!

  • @SandeepSingh-km1fs
    @SandeepSingh-km1fs Рік тому +1

    wow....in a very simple way ..u cleared all d complications regarding... electric parameters

  • @MrMiladmk
    @MrMiladmk Рік тому

    The best explanation ever by using mechanical concepts. Great job!

  • @RaminRnn
    @RaminRnn 10 місяців тому

    Great job, if only school and college would explain things this way. I'm gonna stick around.

  • @sundararajanpt7158
    @sundararajanpt7158 4 місяці тому

    Explanation and depth of the subject is excellent.

  • @metincansever9810
    @metincansever9810 Рік тому

    Best explanation I've seen so far. Thank you.

  • @RahulPrajapati-jw8iu
    @RahulPrajapati-jw8iu 11 місяців тому

    This video is by far the best video I have ever seen

  • @3.1429
    @3.1429 Місяць тому

    The best primer to begin with. Excellent!

  • @LemlemEnjerawerk
    @LemlemEnjerawerk 8 місяців тому

    I have never seen as clear as this explanation.thank you bro.

  • @AbuDujana692
    @AbuDujana692 Рік тому +1

    Great job dear....you must have spent considerable time in creating this very good lecture

    • @Profmad
      @Profmad  Рік тому

      yeah. Thats correct.

  • @NightWear21
    @NightWear21 Рік тому +1

    excellent video!! been a student of electrical for too long. This is great explanation.

  • @usawashington8487
    @usawashington8487 Рік тому

    Best channel ever in youtube, keep going please !

  • @NimeshKavinda139
    @NimeshKavinda139 Рік тому

    The best explanation I've ever seen. Thank you.

  • @puddleduck1405
    @puddleduck1405 Рік тому

    thanks so much! Im a first year engineering student and this helped me a lot, God bless!!

  • @swirldude3636
    @swirldude3636 Рік тому

    this is the clearest video I've ever seen

  • @solankishailesh6424
    @solankishailesh6424 4 місяці тому

    Prof MAD You Are The Boss Of All Explainers In Universe ❤

  • @GerbenWijnja
    @GerbenWijnja Рік тому +8

    6:10 it is important to realize that the current in the circuit does not change. If water flows with (for example) 1 litre/minute through the narrow socket, then it also flows at 1 litre/minute in the wider tubes. It just moves faster through the narrow socket. Same in an electrical circuit; if you introduce a resistor, the flow of electrons (the "current") is the same everywhere in the (serial) circuit, including inside the resistor.

    • @andreiv3627
      @andreiv3627 Рік тому

      hello, what are you saying is that as long as the Force is the same in both cases, (case 1 pipe having same diameter, case 2 pipe narrows and then comes back at same diameter ) the flow of water would be the same? "Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy. The principle is named after Daniel Bernoulli, a swiss mathemetician, who published it in 1738 in his book Hydrodynamics."

    • @dexterlyndonsabusap1192
      @dexterlyndonsabusap1192 Рік тому +1

      I agree. Also, if the voltage is analogous to force, which in water flow is due to pressure, then the introduction of a resistor in a circuit should affect the voltage and not the current.

    • @ncooty
      @ncooty Рік тому

      Depends on whether voltage or current is constant.

  • @rachidlamzougui1683
    @rachidlamzougui1683 3 місяці тому

    Resistance,impedance and reactance (R, Z and X) are all measured in the unit of Ohm. Thanks a lot for this video

  • @jamesholbrook3648
    @jamesholbrook3648 Рік тому

    As a 1st year ham radio operator I wish my study materials had explained these terms as well as you did. Now it all makes sense.

  • @HristovRumen
    @HristovRumen Рік тому

    Wow. Just in time... this is maybe a sign from the universe that it wanted me to succeed. This video wad uploaded exacrly in my time of need... thank you

  • @Compwib
    @Compwib Місяць тому

    Best video with water force examples

  • @jeffhein7275
    @jeffhein7275 Рік тому

    Tuvok narrating basic EE concepts is awesome 😉

  • @jasonbourne1981
    @jasonbourne1981 2 місяці тому

    Best video on the topic hands down thanks

  • @MitulShah2201
    @MitulShah2201 Рік тому +2

    Best video found ever for this explanation.thank you so much❤

  • @ProdbyMolex
    @ProdbyMolex 5 місяців тому +2

    Damn you deserve the whole world.

  • @siriusleto3758
    @siriusleto3758 Рік тому +5

    Best explanation I've seen in my life.

  • @xacteducation8036
    @xacteducation8036 3 місяці тому

    Best circuit graphics I have ever seen!

  • @dsraju1234
    @dsraju1234 Рік тому

    Excellent explanation, it's so simple and practical that even intelligent kids can understand these concepts 👏👏👏

  • @arthurfricchione8119
    @arthurfricchione8119 6 місяців тому

    Your content is extremely valuable to me. Excellent presentations. 👍 Artie

  • @thenewsydneyguy8662
    @thenewsydneyguy8662 Рік тому

    Absolutely phenomenal with the explanations. Thank you Prof Mad for this

  • @Ashok20164
    @Ashok20164 Рік тому

    Hello professor, I just stumbled upon this video (while trying to find more information to trouble-shoot the compressor issue in my mini-fridge) and found your explanation awesome!. You are a good man!. Ashok

  • @NaturesNurtureHub
    @NaturesNurtureHub Рік тому

    Unbelievable, this was simple and plain to understand. Thanks alot

  • @rameshnkdv6757
    @rameshnkdv6757 Рік тому +1

    Excellent explanation sir

  • @eugalshokeen397
    @eugalshokeen397 9 місяців тому

    One of the best video I've ever seen.

  • @UnitFerminBDauag
    @UnitFerminBDauag 10 місяців тому

    thank you for the very clear and intelligent explanation that I just watched

  • @bullohsemak8959
    @bullohsemak8959 10 місяців тому

    As engineer to truly understand some things we must concluded it or verses it all it types. Sir u concluded this topic so well. U must be are professor.

  • @NaveenKumar-vj9sc
    @NaveenKumar-vj9sc 2 місяці тому

    Top notch explanation ! Never before Never After. Thank you! 🙏❤

  • @artie5172
    @artie5172 2 місяці тому

    Best video ever in this topic! Great analogy! And a doubt, when we connect a capacitor to a DC voltage source, do we have initial current and then it decreases to zero, while the voltage remains constant?

  • @jimpowell9205
    @jimpowell9205 Рік тому

    Excellent presentation. I already knew this, but have struggled to explain to others! No more……….thanks.

  • @TrionityIr
    @TrionityIr Рік тому +15

    This is the best analogy I've seen for inductance and capacitance.

    • @Profmad
      @Profmad  Рік тому +2

      Thank you.

    • @mikejones-vd3fg
      @mikejones-vd3fg Рік тому

      I agree, was waiting to see how voltage/current lag would be shown with water, and the water wheel was perfect. There you can see without words how it works. Which has me thinking maybe the best explanations are ones that just boild everything down to untiuve bits, idealy without words, after all everything we're talking about is phsyical and we should be able to show what we're talking about with some sort of analogous action. I would love to see more mathematical relationships shown with action. I guess graphs are the closest thing but they're not intutive either, having to process mentally whats going on with a curve. Like a sine wave is circular motion through time but the graph doesnt make that obivouse. But say something like a gradient, you can see right away which parts are heavily concentrated which ones arent, its obviouse, a 2d graph you need to use a legend to figure out which was is up even.

    • @paules0099
      @paules0099 Рік тому

      The best way I remembered reactance from inductors and capacitance is ELI the ICE man. E for voltage, L for inductor, I for current, meaning voltage leads current in an inductance and I for current, C for capacitor, E for voltage, meaning Current leads voltage in a capacitor.

  • @florentinosanchez3969
    @florentinosanchez3969 2 місяці тому

    Thank you so much, I dindnt get it with any other video until I saw this one

  • @azzamdaaboul1619
    @azzamdaaboul1619 4 місяці тому

    Amazing work! The level of detail in your animations is incredible. Could you share what software you used to create such powerful visuals?

  • @saeadabdoli
    @saeadabdoli Рік тому

    Your videos are defenitely valuable, thank you for your efforts

  • @thisgeneration2894
    @thisgeneration2894 5 місяців тому

    Finally a video I understand bless you brother

  • @noobdernoobder6707
    @noobdernoobder6707 Місяць тому

    Brilliant presentation and explanation.

  • @MarkusAudio
    @MarkusAudio 7 місяців тому

    Only now I understood direct vs alternate current? Instant subscriber 🙂