Kirchhoff's Law, Junction & Loop Rule, Ohm's Law - KCl & KVl Circuit Analysis - Physics

[@TheOrganicChemistryTutor]

Final Exams and Video Playlists: www.video-tutor.net/ Physics Video Lessons: www.video-tutor.net/physics.html

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Why did u multiply by-2 at example 2

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nah

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The first time in my life I fully understand KVL and KCL, understanding fundamentals lays solid foundation for more advanced concepts. Clear and concise explanations with sufficient amount of examples. Thank you very much and well done.

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This is one of the hardest things I have ever tried to learn. It's slowly coming along. Thank you so much for this.

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It’s just adding and subtracting multiplying and dividing nothing special really

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Fr

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Super helpful. My instructor went of Kirchoffs in like one day and I didnt get any of it. So grateful that you took the time to thoroughly explain it, and confirm it! Life saver.

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Low

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[@unbelievable1560]

I get this, but i can't understand how to work with 2 junctions. In my case there is 1 batttery, 4 ressistors and 2 junctions. so I(current) is equal to what? I used this equation but it doesn't make sense, I1=I2+I3+I1-I2-I3. This is what reffer to 18:02. Help please :D

[@Zeusik69]

@@unbelievable1560 if you are still struggle with that question i could help you but i will need to see the circuit

[@unbelievable1560]

@@Zeusik69 Yeah i still struggle with the problem. Here is a screenshot of the circuit. imgur.com/a/NJJnKWz

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This was unimaginably helpful! I can't thank you enough for all your help and I think I finally know how to apply Kirchhoff's Laws to complicated problems thanks to you!

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Don't worry, just keep asking yourself "why does that make sense?" As you're working a problem, remember the fundamentals you've built until this point and ask "how does then and now work together?" And break it up into small steps instead of seeing it as 1 big problem. If you try for long enough, it'll come as easy as breathing

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By clear the best video i've ever seen! i was so stuck on this concept and has made calculations so much less confusing - i love the amount of depth, and that you didn't leave anything out while explaining every equation. Many thanks

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julio?

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I have an exam tomorrow in physics, and this is one of the lessons that I just can't get. Because of this video I have a little bit more of understanding in this topic, time will tell if it will help me pass my Senior year in highschool

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What happened on the test day?

[@defaltmarkowicz527]

@@muhammadhammad268 this was a couple of years ago, but to answer you, I passed with honors

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Hahaha me too

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And you are solving from???

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I have a question. In the last example. Why did you use the current 1 in the resistor below? By following the current flow, shouldn't it be current 2?

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nice lecturing video but can you make a video about Norton and Thevenin Theorem coz i cant find that in your channel ..thanks so much

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Man, thanks to you, I now know how to do this kind of questions:)

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Thank you so much man, the textbook simply didnt explain most of the small things and just expected me to understand them (which i would of had i not skipped classes lol). You´re saving my grades

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Wait what. That's so different from the "technique" they taught us. This is so intuitive ! You are calculating a voltage levels on various points and not voltage drops directly, and it's much easier to understand.

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I hope you make as much as my physics professor because you're the only one teaching my whole class.

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Use Kirchhoff's law, they said... It'll be fun, they said...

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choosing engineering was a mistake

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@@me-ry9ee yeah I seriously want to kill myself. If I graduate it will be a miracle

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@@Ed-uk8el same dude. Same.

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Me: cool all I need to know is R=V/I Kirchoff : ahemmm cough cough

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@@IonizedComamy smart ass mistake exactly....

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keep up the good work! you are helping as much people that you cant even imagine!

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Sir you are a blessing in disguise…words can describe how much u have help me understand this topic..keep up the good work👍🏾

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Great videos! You are on the same level of quality, clarity, and helpfulness as Khan Academy. Everything is so easy to follow when you explain it. What kind of software/ device are you using to write with? I would like to get whatever it is to do my school work on. seems like it would be a great device to take in class notes with.

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I really think any kind of paint application would work, even MS paint. If you have an iPad I would recommend GoodNotes 4, i take notes for my STEM classes with it and everyone is always amazed at how nice my notes look!

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Please, tell me where were you when there was no KZbin back in the 90s. Please, tell me! Thank you very much for your work. You are really talented.

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I have no words for you. I am your student since I was in 9th class. and now in am in civil engineering level and your teaching level is unparallel. you deserve 100 million subscribers.

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please do you know why was loop 2 not taken from negative to positive terminal at the 18v source but instead the other way which is from positive to negative??

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I watched the first 25 minutes got the whole idea rather my teacher have been teaching through it for hours , what a legend

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Thanks Mark Wahlberg

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Whut?

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Can't unhear that voice now, lmfao

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too jokes man

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How to unsee? 😂😂😂

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He actually sounds like him lool marky teaching us math

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One of the greatest videos ever.. bar none. Amazing work sir. Thank you!

[@gkmcjose4494]

53:57 you made a mistake, shouldn’t the 4 ohm resistor be 4i2 not 4i1? The current going through the 4 ohm resistor should be i2 not i1.

[@suderiojoshuarheyelld.4518]

same question here

[@lightninggaming7324]

I1-I2-I3 + the I3 + the I2 get the I1 from the parallel rule where It = I1+I2+I3 they add up because it is two wire connect to one

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thanks pal, good video,, it helped me to remember electronic concepts from school and get ready for an interview, all the best

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I am Writing my physics exam on the 6th. I am confident with electricity after the vid

[@area1725]

Book marked at 1:08:19 Thanks for the video . It made everything so much easier and clear .You are a live saviour ♥️

[@muhammadhammad268]

Thanks for this

[@jibinrajtj2826]

Thank you for explaining all this very well! I have one doubt though! Isn't it -4I2, instead of -4I1 at 54:00 , or is that i got it wrong? would be very helpful to get an answer. thank you so much again!

[@chinapeak7248]

me the same problem

[@FasAntick]

I thought that too but since the 4ohm resister is after the last junction all the currents have recombine to make I1 again.

[@siyengongoma3310]

sum of I in = Sum of I out at the junction Therefore, I2 + (I1 - I2) = I1 That is how he got 4*I1

[@SpectreFury]

I have a test tomorrow for BEEE and you are the only one you helped me. Thanks man!

[@kseriousr]

35:45 Shouldn't that be -4i2 instead of -4i1?

[@udogadiedurumaraihe2047]

My thoughts too

[@reetamk6049]

@@udogadiedurumaraihe2047 36:12 he corrected it

[@lovepuppy2242]

I finally understand my linear circuits class!!!! thank youuuuuu The labs have been fun but the theory has been killing me (I won't lie, I didn't pay a lot of attention at first and by the time my brain came back to me i was so lost) I have a study group tomorrow and I think I'm actually confident i can clear things up if asked

[@attackon195]

Hearing him say "that makes sense" makes it make sense

[@bonbonplays2952]

this knowledge is forever in my mind now.. thank you

[@culture101]

In the last circuit example in the first loop: why does I2 not continue in the horizontal 4ohm resistor? Why is it obvious I1?

[@adelabuidris6292]

i find it confusing too

[@benkogan522]

It's kind of hard to explain but with the direction of current he chose, I1 has to go through that 4 ohm resistor because it is in series with the 20V battery and the 2 ohm resistor which each have I1 going through them. Essentially, I1 is the initial current that then flows into the parallel elements until it returns back with the same current remaining. Look back at the first example. 4 amps flow from the battery into the junction, where it splits into 3 amps and 1 amp, until it returns again with 4 amps to go back through the battery. The total current is never lost when returning to the initial position. Again, this is all relative to the direction of current that he chooses.

[@amirachennouf2684]

@@benkogan522 Thank you !

[@delicate_vet]

Ben Kogan Yes But in the previous examples we didn’t use I1 we used the value that was split up. So how come he didn’t use it here?

[@benkogan522]

@@delicate_vet I don't understand what you are asking. Which example specifically? KVL uses a combination of all the currents in the voltage expressions, not just 1.

[@Roy-gj1ph]

You are so great as a teacher.And you talk slowly.English is not my first language but I understood everything you said.

[@nachogooda6129]

Wouldn't the equation at 54:26 be 14=2I1 + 12I2 as I2 is passing through the resistor of 4 ohms?

[@EducationalLearning-i7l]

When additional Voltage Sources are added to the circuit, it causes the amps to act funny since the amps created from the different Voltage Sources can meet up with each other and strengthen the current. In this case, the Amps from the 8 Volt Battery would not go to the Negative Terminal of the 20 Volt battery, rather the 8 Volt Battery will go to it's own Negative Terminal, therefore, the Amps aren't being boosted by the 8 Volt Battery at the 4 Ohms Resistor like it is at i² Resistor, therefore, when the 20 Volt Battery completes its circuit at the 4 Ohm Resistor, it will not have the Amp boost from the 8 Volt Batrery, so it will use its original Amps that it had, which is i¹. And the reason why is because all Amps, AKA Current, wants to return to it's original source that produced it. The Current will not settle for a different Voltage Source, AKA Battery, that did not produce it.

[@takundanyoni9752]

You're a hero, you're truly an Educational GOAT! The Messi and Ronaldo of teaching 🙌👏

[@praveensharrma465]

at 20:32 should the polarity of the 3 ohm resistor be the other way around for current to flow from I2?

[@gehadyasser1001]

And I thought kirchoff's law couldn't be understood no matter what.. U proved me wrong seriously thankuu!!!

[@pamellaikirezi1571]

Thank you so much for this. Please do one with Norton/Thevenin or maybe one on Power

[@djrkings1800]

Actually the most helpful video for 1st Year Electrical Students ever.