Hi friends! Thank you so much for watching this video and supporting my channel :) I also want to thank Skillshare for sponsoring this video, please check out a FREE trial for Skillshare Premium by clicking the following link: skl.sh/parthg02211
@wgm-en2gx
3 жыл бұрын
Oh Parth... You are splitting hairs. If you want to split hairs, lets go! :-) For Pythagoras' theorem, it only holds for right triangles just like ohm's law only holds for steady state. The real formula for triangles is : a squared + b squared - 2ab cos theta = c squared Also, if you want to split hairs, there is no *real* component that is "ohmic". In other words, no component in the real world has a resistance that does not vary with things like temperature, frequence, voltage and current. Again splitting .... even your R = delta I / delta V formula isn't the complete story. A more complete one would be V = I Z where Z is the impedance. Impedance is frequency dependent so even that is incomplete.
@akashsunil7464
3 жыл бұрын
Oh yeah it doesn't mr. parth it depends on temperature and resistivity as well they dint put those conditions into picture is that what u were gonna say
@nehaseth2793
3 жыл бұрын
Hi Parth Sir I am from India and i request u to please make a video on Quantum Field Theory or String Theory . i don't know whether these are your fields but i would be happy if you make a video on the same topics actually i am interested in these kind of subjects because this boy (i) wants (want) to become a theoretical physicist when he (i) grow up . 😀👨🔬
@angelmendez-rivera351
3 жыл бұрын
@@wgm-en2gx Imagine being so stupidly arrogant as to not understand what an approximation is and how laws work. 🙄
@MMMM-sv1lk
3 жыл бұрын
@@angelmendez-rivera351 oh here you are again wow this is a cult after all 😂😂😂
@FlaminTubbyToast
3 жыл бұрын
Another three word sentence better than “I love you”. “Assume Ohmic Conductor”
@dhanashrikulkarni5878
3 жыл бұрын
COOL
@gauravjoshi9685
3 жыл бұрын
Friction is negligible 😁😂
@mayankbhaisora2699
3 жыл бұрын
How do you know “I love you” is a good sentence?
@dhanashrikulkarni5878
3 жыл бұрын
@@mayankbhaisora2699 hehe bouy. You hit the right spot😂
@mayankbhaisora2699
3 жыл бұрын
@@dhanashrikulkarni5878 hehe 😂
@meenuluthra4397
3 жыл бұрын
Man sometimes the way something is explained just makes you appreciate the concept much more. And you did exactly that. Dismantle my misconception and then build from that. Thanks want more such videos
@ParthGChannel
3 жыл бұрын
Thanks for the lovely comment!
@theoreticalphysicistzeinaq2753
3 жыл бұрын
@@ParthGChannel I liked your videos, I subscribed now when I watched the video about how to solve shrödinger 's equation, I am 12 years old and I am trying to finish learning calculus and quantum physics, I am also trying to search in the theory of quantum gravity, so can you make please a video about quantum gravity and graviton boson also string theory please ! 😀
@67ManiK67
3 жыл бұрын
This just proves that "resistance is futile."
@MMMM-sv1lk
3 жыл бұрын
indeed :)
@dougaltolan3017
3 жыл бұрын
You will be ampsimilated.
@reznovvazileski3193
3 жыл бұрын
Everybody gangsta till the circuit has an impedance so now we've got a resistance that's a function of the current flowing through it and a current that's a function of the frequency it's flowing at :')
@BitwiseMobile
3 жыл бұрын
AC analysis gives me a headache. :D
@altuber99_athlete
3 жыл бұрын
If the circuit is linear time-invariant, you can use phasors, which is still easy.
@vardaandua3585
3 жыл бұрын
I think ohm's law is also incomplete without Electric Field , current density and also the concept of drift velocity... kindly explain these as well... I Love the way u explain Parth.
@johnnyroy9830
3 жыл бұрын
I have another doubt. The Ohm's Law states : "The Current flowing through the circuit is directly proportional to the applied Potential Difference." It means "I is proportional to V", which in my views is different from "V is proportional to I", which we are taught to be same. Then, why in books, they write it - According to Ohm's Law, I is proportional to V. Mathematically, V is proportional to I And you get, V = IR. If you understand what I mean, please do clarify. Support your amazing work.
@alexanderquilty5705
3 жыл бұрын
Yooooo thank you for this video! I’ve always said this ever since I learned it in my physics class and everybody always said I was crazy 😂
@Mr.Nichan
3 жыл бұрын
This reminds me of thermodynamics in chemistry. Specific heat changes depending temperature and pressure, as do most other thermodynamic properties, making curves such as internal-heat vs temperature not straight. Introductions to chemistry often act like it is constant because it usually is almost constant if all of what your doing is broadly close to standard temperature and pressure. That works for normal laboratory chemistry, but not for, for example, geochemistry.
@sumdumbmick
3 жыл бұрын
Whenever I taught Pythagoras I drew squares off the sides of the triangle and first showed the equation as the largest square being the sum of the smaller squares. Literally draw a picture of the bigger square, an equals sign, a smaller square, a plus sign, and the other smaller square. It's visually much more intuitive, and much harder to forget or screw up.
@MMMM-sv1lk
3 жыл бұрын
this why electrical engineers make a distinction between resistance and impedance, still a great video... well done
@kartikkalia01
3 жыл бұрын
🤰
@MMMM-sv1lk
3 жыл бұрын
@@kartikkalia01 yes 😌 electrical engineers are pregnant...
@arnesaknussemm2427
3 жыл бұрын
Not necessarily, impedance applies to ac circuits not dc circuits.
@MMMM-sv1lk
3 жыл бұрын
@@arnesaknussemm2427 those components such as inductors and capacitors are solely used in ac circuits.
@arnesaknussemm2427
3 жыл бұрын
@@MMMM-sv1lk but diodes aren’t nor traditional filament light bulbs.
@fontanads
3 жыл бұрын
Nice explanation. Maybe people don't discuss it too much because when you go to models and circuit analysis of practical devices, such as the diode, simplifications are made to convert non-linear devices into linear models with ohmic resistance + linear circuits' analysis in parts (e.g., for diodes, an open-switch model and a closed switch model). The first chapter of recent editions of Boylestad's book on electronics has a very insightful intro to semicondutors with a detailed discussion on the diode's dynamic resistance. Regarding what really is "ohm's law", I really prefer to ignore the historical experiment and approach it with the insights from the microscopic view and focused on "conductivity" to derive J=sE (s for sigma, the conductivity). My point is that you gain much more insight in materials characteristics instead of some mathematical model for ohmic resistors.
@Amlan_CSE
3 жыл бұрын
Great video 👍 learnt a lot...actually in the JEE syllabus we have this chapter and you made a great revision...
@a.osethkin55
3 жыл бұрын
Also a specialist for me. Everyone knows that Ohm's law is about portioning. Apparently in America they don't teach physics very well at school .. And about the fact that I touched on non-linear elements - this is a plus, it's a pity that the topic has not been disclosed (very little ..)
@omegapirat8623
2 жыл бұрын
Actually, Ohms law is a result of Phonon-Electron coupling and linear response theory. Therefore Ohms law should not hold true for Ohm conductors either if the voltage is high enough.
@M0XYM
3 жыл бұрын
Hello Parth - thank you - a fine presentation as usual. On the subject of diodes and resistors: I'm told that if two sine signals are 'fed' into a resistor the combination is 'additive' i.e. the resultant output signal is the *sum* of the two inputs. However, if the same two signals are fed into a diode the combination is 'multiplicative' i.e the resultant output is the *product* of the two input signals. Like your school chums on Pythagoras I can repeat this property but I don't really understand the underlying physics - I think your viewers (and I!) would appreciate a video...
@ds_DNA
3 жыл бұрын
V=IR it's true only when for a particular system/circuit where V/I = constant everywhere,that is a homogeneity is present. But it's not necessary to be happened everywhere(non homogeneous cases like Diode etc.) but instantaneously one can accept (dV/dI) to determine resistance at that instance.
@keithyasumura
Жыл бұрын
Parth, that was a great example of the Pythagorean theorem! I think that the public school system is still very much broken and only values "knowing what to think" rather than "knowing how to think". But yeah, also I think that's a great point about non-ohmic conductors/diodes, R=dV/dI or differential resistance. I think that coming up with new creative solutions and new theories of reality is more important(and we should not even think of it as "right/wrong" theory we should just gain a better understanding of "The Truth") rather than going with what is already known(ohm's law, R=V/I or static resistance, I have seen the same thing with electrical engineers memorizing "V=IR" rather than questioning it!!!). But anyway, Great explanation Parth!
@hughmungous1539
3 жыл бұрын
I would love to see a part 2 on this. Going into the discrepancies between r and R, talking about what the physical differences are between them and maybe how resistance is taught at a higher level of education. Anyways great video as always Parth!
@deemedepic7721
3 жыл бұрын
I've just watched this - you've got yourself another subscriber
@zhubajie6940
3 жыл бұрын
Similar arguments could be made for Newton's Law of Viscosity or the real versus ideal gas equation but the compressability factor varies but not so in the ideal gas equation where the compressabilty factor is one. One of the most difficult idea I had to get across to machine design engineers as a thermal fluids engineer is that not all phenomena are linear and start at zero nor are the two dimensional nor are they continuous functions.
@StevenHodder
2 жыл бұрын
And this really only true for constant voltage/current and situations where there is no energy storage. As soon as we introduce circuit elements that can store energy things get even more interesting. For inductors, voltage is proportional to the time derivative of current; for capacitors, voltage is proportional to the time integral of current. Oh, and then we can get into AC circuits, where we have frequency-dependent impedances
@krish-502
3 жыл бұрын
Thanks a lot Parth .....I am grateful to you for these videos.
@thecritiquer9407
2 жыл бұрын
u videos r helpful to correct me wherever I got wrong in my school time.
@georgejo7905
3 жыл бұрын
Nuance . R =E/I and in this case it always holds.Diodes have ohmic resistance as well as current dependant gap . A complete model is even more complex. Impedance is defined , yes defined, as Z = E/I . Resistance is defined as R= E/I . It is right in the word "defined". V = I×R is not the definition of voltage. Impedance and resistance are the derived variables not voltage or durrent , they are derived otherwise. The resistance or impedqnce can be instantaneous or it can be a function .
@xDR1TeK
3 жыл бұрын
When I got to my RF courses at university, my instructors said it was time to forget everything we learned before.
@srijitachakraborty5175
3 жыл бұрын
Man I was looking for exactly this question when you came with this video!!!! You're a life saver!!!🥺❤️
@dhanashrikulkarni5878
3 жыл бұрын
You should really interview famous physicists such as Brian Greene We would very ¹² like that.. MAKE A DISCORD
@mzshmkn
3 жыл бұрын
I would actually be interested into a much more deeper dive into the differences between static and differential resistance and what their effects are on a circuit.
@justaracoonchillinginatoilet69
Жыл бұрын
This was really helpful for me in understanding the electricity topic in my a level syllabus better. Cheers mate
@altuber99_athlete
3 жыл бұрын
Thanks for spreading this. I've also explained this in Quora yet people keep saying "Ohm's law is V = I R", "Ohm's law is never violated", etc.
@brunoribeirodematos622
2 жыл бұрын
Thank you for the video. I would like to better understand this topic. It seems that ohm's law is not a true physical law. The ohm's law is much more a logic relation as the one you showed for the pythagorean theorem, that tells nothing on the physical world. If R was a constant in the same sense of Boltzmann constant, in this case I believe that it would be a true law. If a large current passes through a material it heats up and the resistance changes, that doe not happen with Boltzmann constant. And also by considering that there is no such a thing as a pure resistor, all materials found in nature exhibit the three aspects of electromagnetism, namely, inductance, capacitance and resistance, this reasoning also leads to the conclusion that the ohm's law is a logical idealism of an electrical behavior. What do you think?
@hooya27
3 жыл бұрын
I've been an electrician for a couple of decades, and I just realized the blessing/curse that we deal with in these equations is from the defining of units such that a volt is an ohm times an amp. This simplifies things greatly, since there is no conversion factor, but the absence of the conversion factor makes the concept simple to the point that you can loose track of what's really going on.
@user-hj7ld4ff7p
9 ай бұрын
Potential is the self (I or ego) encountering resistance in the world. Our human potential is the flow of self encountering resistance. VIR is an ancient Sanskrit word for man (in English we have virility and virtue plus all the yoga poses that begin with vir-). Human = self times resistance. The self or I or ego is flow. Without flow, death. In summary, V=IR. With such knowledge I begin the video. I modify now according to your instruction: resistance must be constant for V=IR to work. Hmm. Makes sense. Life has ups and downs. So perhaps we can modify it thus: to be human means to have this constant fact of life's resistance. If I'm understanding 'd' correctly, it's like delta, right? Change. Like the way the Mississippi is one channel for so long till it considers flowing into the ocean, at which point it deltas into multiple channels. Delta is ready when you are [joke for the over-fifty crowd now facing the changes of old age]. And I think you're saying that V only equals IR at fixed times, not during delta times, which is to say not during change. Snapshot not movie. If you gotta calculate gradients that's more like a movie. Pretty cool that I did this without any "resistance is feudal" or ohm/home jokes, so bonus points for me. I will go off now and muse about how the letter I, the self, the flow, the current, can exist in static time. Do we exist without flow? I'm just trying to keep as the French might say. Stay current! Don't get old! Does VIR, man himself, exist outside of delta time? Two years have flown, flowed, past since you made this video. "You" don't exist. If 'I' is current, current is flow, and flow only exists in time, and time is always delta time [Delta is ready when you are, I might have mentioned]. Therefore I is only potential. Making flow sound a lot like voltage. Sheesh. So there are other ways in which V doesn't equal IR. And don't get me started on the ontology of "equal," because nothing "equals" anything else. Are we having fun yet?
@Loknath009
2 жыл бұрын
Yes! I'm a math and physics teacher and these two statements enrage me indeed ; )
@r.i.p.volodya
8 күн бұрын
Enlightening - thank you.
@ricban1950
3 жыл бұрын
The Voltage is directly proportional to the current when the temperature is kept constant.
@jarikosonen4079
3 жыл бұрын
Right and it can depend on temperature, light, pressure and other conditions also like pH-value. And the frequency as in "skin-depth" -concept.
@jebarijihed
3 жыл бұрын
Well pretty accurate ! But notice the resistance does not exist on it self ! Resistance is just the module of the impedence which introduce a phase shift also .Hence the for a dynamic resistance the value is not constant.
@iloveindiamorethanagirl8242
2 жыл бұрын
thank you very much sir ❤❤
@Phoenix_Cosmos
3 жыл бұрын
Sir I am realy interested in astronomy... Currently I am doing my pg in physics in a local college in India...Sir is there any way to do masters in physics (astronomy) abroad..Because the study system in my locality is so bad...If I go abroad I will get some good exposure... 2.I want to learn astronomy So what are the basics things should I do.... I would like to do the pg project in black hole thermodynamics eventhough I don't have any knowledge about that area... Sir can u please help me
@hardikn6997
Жыл бұрын
Wonderful explanation
@georgejo7905
3 жыл бұрын
pretty much from the begining it was assumed for constant r . Not too many past high school physics doubt this. It was in electronics shop in high school we tried to figure out r for a light bulb. Which is still ohmic but variable . I fact all r is variable in reality you just can assume it is not if it is in spec and small variations dont matter. 5%tollerance is often sufficient and even 20% were used. As for the light bulb its r is proportional to temperature and temperature is proportional to the fourth root of power . To a first approximation. Without calculus we did algebra till we came up with a formula. We wanted it for a feedback resistor in a wein bridge oscillator.
@kenlogsdon7095
3 жыл бұрын
No mention of the power relation P=I^2R=EI=E^2/R? Another way of stating the static resistance definition is simply that one "ohm" is equal to a volt per amp
@Slyracoon666
3 жыл бұрын
Would be cool if you made a video about physics and complex numbers
@exponentmantissa5598
3 жыл бұрын
And it gets more complex (pun intended). Apply AC and make your load a capacitor. Now calculate the impedance when the AC waveform is at its positive peak.
@ig_itsaugi4138
3 жыл бұрын
Wow you're perfect! 💚 understood it allllll. 🦋
@officer_baitlyn
3 жыл бұрын
1:03 i do tutoring in germany all the textbooks have problems like that to get "just simply a²+b²=c² out of the students' minds the 90 degree part is also frequently forgotten about by students
@KW-12
8 ай бұрын
Ohm Law may fail in Many cases. For example: -When the material has non linear electric properties. - When the current in the circuit is strong enough that the induced magnetic field must be taken into account. - When there are external electric or magnetic fields that can deviate the electrons trayectory. -When the Voltage is too high between 2 points because there are importante thermic effects in the circuit. All of these cause that the graph is not linear anymore.
@Mr.Nichan
3 жыл бұрын
The static resistance is the slope of a line from the origin to the point on the (I,V) curve. The differential resistance is the slope of a line tanget to the (I,V) curve at that point.
@arjunkailas4146
3 жыл бұрын
Parth.G.....if it is your style...then... I'm also planing to start my KZitem Channel. My First video's thumbnail will be "How Ohm's Law is a Blunder??" Content of that video can be summarized as follows... Let a cell is connected to a resistor.Applied Voltage (V) is varied and corresponding current (I) through resistor is noted. Here V is independent variable (comparing with I). I is dependent variable (comparing with V). How anyone can write, independent variable(V) ,proportional to ,dependent variable (I)? Apply common sense..we should correct Ohm's law as follows.. Dependent variable(I),is directly proportional to,Independent variable (V). Mathematically we can write Ohm's Law as... I=RV....😇
@picco_only
3 жыл бұрын
Thank you. Great explanation.
@kartikmadan3575
3 жыл бұрын
I wish i got this during high school. 👍👍
@anonymous_FoX
3 жыл бұрын
V=IR is maybe used for ideal circuits and it's still applied. example in power line, the wire is consuming power before going to every household because the wire has resistance and causes small ammount of voltage drop depending on the distance from the transformer to you house. every kind of metal has its own specific resitivity. even liquid and gas has too.
@byronwatkins2565
3 жыл бұрын
In fact, Ohm specified "For constant temperature, V=IR." He was already aware of one quantity (temperature) that affects resistance. There are circumstances (electrostatic discharge, tunnel diode, Gunn effect,...) where it is quite difficult to make V=IR valid.
@cartoonic6039
28 күн бұрын
How is differential resistance not the same as static resistance in a non-ohmic conductor.pls answer what makes them different
@neutronenstern.
3 жыл бұрын
R is not constant always. There are variable resistors If you measure 3A through a wire and you measure 1V across it it means, that the Resistance has to be 1/3Ω cause R=U/I The more voltage the more current (at same resistance). The more current the more Voltage (at same resistance) The more resistance the less current (at same voltage) the more resistance the more Voltage (same current) If you want to understand a formula you ve got to always fix one value and variate the other ones. (at three variables) It doesnt matter if its ohms law or anything else. Theres alway more to it For example:v=a*t well which v ? The v before acceleration? of course not! The v while acceleration also not. The v at the end of acceleration yes. But only if the v at the starting point is zero. Cause else its ∆v=a*∆t The same is for the E=1/2mv^2. Or p=F*t If you press against the wall with a force of 1N for 10seconds. Then the wall an also you wont have a impact of 10Ns. Cause all the forces cancel out. But this has to be considered. In physics there isnt only the formula, but also the context. Or else it could be interpreted wrong. But i know that earlier i also understoid it wrong in scool. But i thought about it, and got it. Youve gotta think to understand (i actually made the mistake, that i didnt think of the fact,that the overall voltage of a circuit normally doesnt change. I calculated in my head as if current was constant although i new (i think i knew, but this was several years ago) that the averall voltage should be constant. I just got cobfused by the formula cause i didnt consider, that I can change. (;
@pragandebnath3915
Ай бұрын
Hey parth do this statement "voltage is proportional to current"hold when temperature is increasing
@MrJMont21
2 жыл бұрын
If V is proportional to I but inversely proportional to R, then why do some circuits have a very low voltage but very high current? I understand that to have a very high voltage and reduced current, the resistance needs to be increased, but what needs to be different for a circuit with incredibly low voltage to have a large current? Of course, the resistance would need to be very low but I have the intuition that only a very low resistance may not account for the significant difference between a low V and a high I.
@lewisleslie2821
3 жыл бұрын
Ohm my god! How did I never know this?
@seionne85
3 жыл бұрын
Thanks parth!
@27merk
3 жыл бұрын
Very helpful.
@tylermcconnell2222
3 жыл бұрын
Can you explain the logic behind electrical transmission lines? In order for power companies to send power over very long distances, they increase the voltage, which decreases the current in the line because Power = V*I. But ohms law states that V=I*R, so the only way to increase voltage and decrease current is to increase the resistance? That makes no sense to me
@H-_.9
3 жыл бұрын
Nice vid. Would have been helpful to work through a scenario and show quantitatively when static resistance didn't equal differential resistance and build up a physical intuition for why it was at least different in that case.
@namraaah271
3 жыл бұрын
Sir pleasee reply...why can’t we write I proportional to V and then proceed to write I/v=R..why doesn’t it work that way?
@nestorv7627
3 жыл бұрын
It also works that way. It simply depends upon your equipment and/or experiment. I'm my physics labs it was usually easier to increase the voltage across a system and measure the response of the current. But you could do the opposite as well. If the current is the output of one system, then you might want to measure the voltage response of another system due to that current.
@theimmux3034
3 жыл бұрын
Is there a general formula for the resistance of a conductor then?
@anandkumarpatidar1140
3 жыл бұрын
Parth bhai kadak
@greenstar9385
3 жыл бұрын
Please do a video on the outward force we feel in the bus when it(the bus) is doing a roundabout
@RealMesaMike
2 жыл бұрын
To be more pedantic, Ohm's doesn't involve the letter V at all. (It's actually E = I*R).
@sisaymelese3189
3 жыл бұрын
in ohms law v is directly proportional to current but in power formula v is inversely proportional to current , please clarify it
@jalmohman5300
3 жыл бұрын
we should do a physics podcast
@eyewaves...
3 жыл бұрын
Another great video...
@bensonuzukwu2644
3 жыл бұрын
Thanks a lot .
@jlpsinde
3 жыл бұрын
Very good
@JhanviBapat-nq9bi
7 ай бұрын
Pls pls make video on transistors
@michaelmccoll3204
3 жыл бұрын
i know you dont do much maths on this cahngel but do u know where I can go to get a taces off the maths (ovlesly nothing subs 4 year uney digrey but as a aleve student I'm am very curious) congras on the sponcer by the way
@sdsa007
2 жыл бұрын
1/grad cool! (never saw that before!)
@sujalsalgarkar360
3 жыл бұрын
This vedio was not much informative but still I love this channel
@daledude66
3 жыл бұрын
More familiar to us electrical engineers as "small signal" resistance. We often use lowercase r for it instead of uppercase R.
@petergoh5628
2 жыл бұрын
Does the resistance of an ohmic conductor change with temperature?
@rafaelbausone
3 жыл бұрын
Try combining this with the wave eq to make a video of transmission lines
@sunitadubey1508
Жыл бұрын
Thanks bhaiya
@flashdrc
3 жыл бұрын
Please rant to us about R(t) = V(t)/I(t), I can't wait.
@lacasadeacero
3 жыл бұрын
Laws are based on problems. Not as a universal truth. We just use it when the problem looks simple. There's some experiments can be explained with an algebraic model. Other cases like variables can be described with More complex Versions of the model. Like a differential equation . For example R=dV/dI. U see it's way more complex don't you think?
@livedandletdie
3 жыл бұрын
Pythagoras' Theorem holds true for n dimensions, so still saying a²+b²=c² is wrong, because it's for k elements add all the squares of each Q from 1 to k and take the positive root of the answer as your diagonal length of a k dimensional cube. a²=a², for k=1 ; a²+b²=c² for k=2 ; a²+b²+c²=d² for k=3 and so on. So just saying Pythagoras is the 2 dimensional formula, is really weird.
@lylekennethgeraldez550
3 жыл бұрын
V=IR is ONLY a consequence of Ohm’s law. It’s not the original law. The original one states that the induced current density from an electric field is proportional to the magnitude of that field.
@MrElvis1971
3 жыл бұрын
It states "directly proportional" not "proportional". This video is nonsensical as far as I am concerned. It essentially states "Ohms law applies to ohmic resistance" which is obvious... ohms law applying to non ohmic resistance is nonsensical. After all, the definition of an ohmic resistance is resistance that follows ohms law. Differential resistance is not ohmic so by definition does not follow ohms law. The end!
@lylekennethgeraldez550
3 жыл бұрын
@@MrElvis1971 Though I think he was trying to emphasize that Ohm’s law is not V=IR contrary to what most basic physics in school teaches
@MrElvis1971
3 жыл бұрын
@@lylekennethgeraldez550 yeah, I know. Being a former Electronics Engineer for 15 years and now a teacher, I understand what he is trying to do. I just disagree with the approach. But like most things, headlines are usually click bait. Probably better off teaching what Ohms law is rather than what it isn't. And agree, it comes down to bad school teachers who teach equations rather than concepts. So credit where credit is due, but just was a bit too circular in the discussion for my taste.
@angelmendez-rivera351
3 жыл бұрын
@@MrElvis1971 Good job at misrepresenting the video. People like you are exactly why the education system is as universally bad as it currently is.
@MrElvis1971
3 жыл бұрын
@@angelmendez-rivera351 do you enjoy stalking people? Is it a hobby of yours?
@localboxcrox
3 жыл бұрын
Whats the song? Sounds like post rock
@johnpapadopoulos5185
3 жыл бұрын
With all do respect! I strongly disagree with the part that you said:"the larger the potential difference is the larger the current runs through the resistance" I will give a simple example Let's assume that we have a 12V DC power supply, and a 2Ω resistor. If we use Ohm's law I=V/R so I=12/2 so I=6Α. Now, let's assume we have the same power supply, and a 3Ω resistor, if we use Ohm's law I=4A. So if we increase the resistance the potential difference increases but the current decrease. If what you said was true, then dimmers wouldn't work, and propably the light's wouldn't switch off!
@solapowsj25
3 жыл бұрын
Resistance is a constant for each medium, and is zero for superconductors.
@vanibandodkar31415
3 жыл бұрын
ohhh so the resistance tell us how hard it is to change the current by changing the voltage?
@anmolmehrotra923
3 жыл бұрын
That's a good way to put it!
@RandomTubefulcrum
3 жыл бұрын
This was pretty useful. Thanks, just started electricity in a-levels physics..
@user-ov7kd5go8s
2 жыл бұрын
Wowwww thanks
@arnesaknussemm2427
3 жыл бұрын
So for non ohmic conductors Ohm’s law does not apply ( since it requires a constant resistance) but V=IR at any particular point does?
@paulbaxter2999
2 жыл бұрын
Correct.
@scott-hr3hd
2 жыл бұрын
I thought you were going the bring up the fact ohms law is just an estimation and not an actual law. The reality is in maxwells equation and various Feynman’s equations. Ohms law does not describe actual QED physics and is just the best guess of the field generated around the circuit.
@edwinr4378
3 жыл бұрын
But ohm's law clearly says it's not applicable for non ohmic devices such as diodes and transistors,then what is the point in applying ohm's law to them...and since the temperatures affects resistance, ohm's law also says it's not applicable when there is change in physical conditions...
@angelmendez-rivera351
3 жыл бұрын
It's an approximation, dude
@catmatism
3 жыл бұрын
Then when do we use V/I and when do we use dV/dI?
@monalisamamai2777
3 жыл бұрын
You didn't mention resistivity
@tonystark6997
3 жыл бұрын
It's all about insight!! DOT.
@tahititoutou3802
3 жыл бұрын
Even a beginner knows that. The title of this video is a clickbait. Since R is the proportionality of V/I, OBVIOUSLY V/I will change if I change R. Similarly, since this is true only for DC, a more complete version of Ohm's law includes the inductance (j2πfL) and the capacitance (1/(j2πfc). Saying that if we change R to something else (a diode for example) is like saying that the statement that the motor is what makes a car move is false because if I change the motor for a chewing gum the car won't move anymore...
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