Intro to potential difference (& voltage)

[@ericpalmateer806]

As soon as I hear Mahesh Shenoy's voice, I smile and know that I'm going to have some fun while I learn. Good job.

[@saransh255]

you can hear him smiling and laughing, being genuinely excited about what he is teaching

[@missj6379]

Sme I also feel

[@mrbeast1346]

awesome

[@behappy8341]

The same😊

[@hashsaksham]

Same... I love his channel flothead physics

[@namraaah271]

I would have probably gone mad with the vague definitions in the textbook as I HATE learning stuff I don't understand! Thank youuuu for your selfless video! Love u khan academy 😊😊😆

[@hyuckkcuyh]

I have been confused with voltage and potential energy since the start of the semester, I had read books, watched a lot of videos and tried to pay attention in class but nothing had really helped until I watched this video. Thank you so much!

[@AngusMcAlister14]

This is perfect. So many KZbinrs ranting on about irrelevant crap that just confuses you even more. This is so clear and I finally understand this idea of potential difference! Thank you.

[@user-us7bg6xm4m]

Dude I still could not understand how potential difference is needed to have a continuous flow of current because it is about TRANSFER OF ENERGY AND how is that connected to a continuous file of current?

[@piyushkumarsingh0694]

Amazed again , I'm not surprised.

[@raghu570]

Your teaching is God's gift for me and also other students. 🙏🙏

[@jdsaaa66767]

Finally understood what teachers, professors and books have been trying to explain me. This channel is hands down the best thing that has ever occurred to me on internet

[@maliah3594]

Agreed

[@aerasthoughts]

literally understood so well I could cry

[@TheSadPaki]

Yah, I WASTED 1 WEEK ON THIS!

[@Aaliyah_Matyevna]

Mah physics teacher so bad I could cry. Khan Academy saves the day.

[@samuelebube6024]

Nice

[@balakumaran6056]

No one never explain like this You are concept builder 👌

[@Kamalathmika2009]

The best explanation ever !! And I still wonder, how come this channel is underrated ?

[@tanimowosunkanmi4028]

The best explanation I've ever got on this subject matter. Thank you for this!

[@danielabraham5411]

I am not going to lie here, buy this teaching in way far better than any other vids that I have seen explaining this concept mainly because of that kids slide drawing.

[@worldacademy1706]

As soon as I hear this guy voice I convinced my self to learn new thing. My Teacher is so boring a think he haven't good coarse about this concept and I told him to follow this guy. Thanks a lot mahesh your student from Ethiopia, East Africa.

[@e-study785]

No doubts left.....

[@ourtamilnadu9011]

My biggest unknown concept is cleared only by u.thanks a lot.🤍🤍

[@abhishekvishwakarma252]

Best explained.

[@vaidhyanathanbalasundaram1224]

Excellent explanation. I wish I had heard you before , so I could have taught my students in this way. Now I will use this method. 🙏

[@jibankrishnamuhuri5518]

Can u tell me if i connect only a wire to the bettery ..no bulb is involved ... then the electrons won't loss any energy..then what will happen?..electrons will continuously gain energy while passing through the bettery...?... confuse

[@Jaiyaxhkateacher]

@@jibankrishnamuhuri5518 why did I saw your question now I am even confused

[@Jaiyaxhkateacher]

@@jibankrishnamuhuri5518 I think if come to reality the charge will actually loose potential energy by moving as it convert into heat energy , so if they keep moving they will loose some potential energy and ultimately before reaching the battery of the negative side it will loose its potential energy and they regain . That's why when you connect a circuit without a load it loses some potential energy not all but some and it regain the energy through the battery

[@jibankrishnamuhuri5518]

@@Jaiyaxhkateacher question is valid or not ?

[@Jaiyaxhkateacher]

@@jibankrishnamuhuri5518 mean

[@ishika6802]

Wonderful finally my concepts are clear!!

[@nikhildhania5021]

You are the best explainer of concepts.

[@honourablemuslim2155]

Omg This is So facilitated I would've never understand it this clear 😊

[@lamawehbe1045]

The best explanation till now!! Thank you

[@dhanavathygRaja]

Great explanation ever😎 Startled by your way of teaching 😊 Good job 👍

[@shrinidhipatil7080]

The best explanation everrrr!!!And I mean it

[@kkvenugopal5281]

Your teaching super and easy to understand

[@gauravdadu3879]

amaazing finnally a lecture that explains it properly

[@jibankrishnamuhuri5518]

Can u tell me if i connect only a wire to the bettery ..no bulb is involved ... then the electrons won't loss any energy..then what will happen?..electrons will continuously gain energy while passing through the bettery...?... confuse

[@pallemanojkumar2529]

I think the direction of the flow of electrons is wrong here cause electrons would always flow from negative terminal to positive terminal and current flows in the direction opposite to the flow of electrons. Any one correct me if I am wrong.

[@vivekgudise3379]

yes, it was mentioned in the video. for simplicity we are taught with the direction of protons as their direction is considered the direction of electricity. Once watch the video again.

[@e-study785]

Great × 100000000000000000000000000000000 times

[@BOBO_4869]

Pretty much covers all the stuff regarding potential difference. Very detailed thx 😁

[@SalsaKingoftheApes]

I am teaching this topic and this will help a lot 👍

[@duhom1665]

Now...clearer than before....thank you...mahesh🎉🎉🎉

[@talhashahid484]

Great video. Sir! I really love the way you explain. Just keep making great videos.

[@NatiiAyele]

I truly love your channel. Keep doing the best work.

[@pnsk1975]

The best explanation i found... U need more likes

[@dareensalama6312]

Best explanation ever!!!! Thanks a lot!

[@ssu7800]

this was very easy to understand! thank you for your hard work~

[@Sight887]

this finally made all my concepts so clear... thanks a lot 🙏

[@atharvamahajan228]

It's really the best explanation

[@taanisharora5577]

That person who keeps lifting them is EMF or Electro Motive Force

[@Afridi-Ahad]

than whos the voltage

[@PrabhjotSingh_24]

@@Afridi-Ahad it's the work done per coulomb of charge

[@jibankrishnamuhuri5518]

Can u tell me if i connect only a wire to the bettery ..no bulb is involved ... then the electrons won't loss any energy..then what will happen?..electrons will continuously gain energy while passing through the bettery...?... confuse

[@sanjupawan705]

Best explanation sir .i like your voice sir

[@pulkitgoyal8525]

What a superb explanation 👌👌👌👌

[@ashrayiyer1166]

totally understood the concept by ur amazing teaching sir🙃

[@zozokush3791]

Great video!

[@SaifurSharif]

Superb explanation.Thank you for the service.

[@trafaalgar]

great explanation sir. Thank you so much 🫶

[@vedakrishnapammi5745]

Thank you sir and I 2ould like to have such understanding vedios

[@vanshikaahluwalia8447]

The best explanation ever🙏🏻🙏🏻🙏🏻

[@johnalowoesin5036]

Woow Even ad a physics teacher I just happen to be learning potential difference all over ....what are they teaching in text books for heaven's sake

[@Beybladeshopcafe]

You nailed it

[@MeganZ.]

So if the voltage drops to zero after passing the resistor, then what's pushing the electrons to move toward the terminal of the battery? Can someone explain this, please?

[@shrar7]

I see It cannot never be zero as it just lost what it gained but still have its main potential

[@rajeevranjanbharti3312]

Now .I'm obsessed with physics.... thank you so much..☺️☺️☺️☺️☺️

[@jibankrishnamuhuri5518]

Can u tell me if i connect only a wire to the bettery ..no bulb is involved ... then the electrons won't loss any energy..then what will happen?..electrons will continuously gain energy while passing through the bettery...?... confuse

[@poojathakkar4202]

@@jibankrishnamuhuri5518 No, I guess there will be no loss or gain of energy...it's because an empty glass can be filled when it becomes empty If here, the bulb is not connected the battery will get the electrons already having enough potential energy...so no loss or gain of energy I am not sure whether it's right or not but hope this only the logic behind it....

[@user-ur9km8cc9d]

im crying I love youuuuuuu thanks a lot

[@REM505]

OH thank you for making this understandable without another hose analogy!

[@REM505]

And why is always explained with the ONE thing you do not want to mix with electricity?

[@SohamLearns]

Perfecto ! 👏👏🙏

[@theaveragejoe7966]

I have been saved by an Indian guy on youtube thank you

[@pathak5234]

Nice explaination😯 Thanks a lot sir 🙏 ❣

[@shreyshtpattar]

Whoa... What an explanation..⚡⚡

[@abdulrafay134]

I really love your videeo and I wish you will make videos on physics topic as much as possible

[@crazypopcorn4939]

You are the best thanks

[@golden_infinity_harbinger8016]

Thanks for the crystal clear explanation

[@chitranshitiwari8213]

can u plzz explain tge electrochemical process inside the cell? which prvide the energy to the +ve charge

[@user-tk5hg3ms4z]

this is best explanation ever

[@Ethherr]

Excellent explanation Thank you very much

[@aberatigabe9396]

You are a great teacher,thank u

[@sadanasilva171]

Thanks a lot👍👍brilliant teaching

[@lookvoilance9610]

Sir, I think the current moves from the negative terminal to the positive terminal. I don't know that you are wrong or I. i am really confused??????🤔🤔

[@Momo-lk5yv]

this is brilliant!

[@e-study785]

Fantastic....

[@rehamelsayed1793]

You really amazing 🤩🤩🤩 Thank you

[@nishthag1131]

as long as u guys are here there is hope alive in us.... genuinely speaking

[@nicolosanna8509]

Amazing, Great job man

[@abhishekpawarpoems]

Amazing

[@honourablemuslim2155]

Again, What made the electron move from the positive pole to the negative pole ? is the poles themselves or the chemicals that push them or the difference between their potential energy ?

[@himanshupriyadarshi1186]

Hi! So first up the electrons DONT move from positive to negative pole but the other way round, that is from negative to positive. Also, the chemicals inside the battery are generating energy which act on the electrons to make them move across the circuit.

[@pami22]

Your vids help me alot thanks alot for them

[@jamesboumalhab7337]

Hello, what about the kinetic energy of the charges moving? Isn't there energy lost through the wire? Thank you!

[@ashar4121]

Exactly my question.

[@qualquan]

Using his analogy one could have been more succinct. If mgh represents gravitational potential energy (PE), Voltage is analogous to the "gh" bit or gravitational acceleration x height in the direction of acceleration. In electricity gravitational acceleration is represented by electric field E (which also is acceleration) and height by d (displacement) along the E direction. Just as multiplying gh by mass = mgh (gravitational potential energy) so multiplying Ed by q = qEd = electrical potential energy. The "Ed" bit is also called Voltage or EMF. Thats it in a paragraph Recapping, gh is analogous to Ed or Voltage or EMF or "POTENTIAL". Multiplying with q gives Potential Energy (PE)

[@nirmalam560]

God bless you sir.. 🙏🙏🙏🙏🙏

[@Waterlmelon]

Thanks a lot for the very good video!

[@karthikeyant5014]

10:38 but in reality it loses stored energy and converted to heat right sir Then how the potential difference between the two points becomes 0 🤔

[@moratasa9741]

best video on volt

[@jigipatel8183]

🙌🏻🙌🏻🙌🏻🙌🏻

[@Arunkumar-ee4gb]

No one explain potential energy better than u sir

[@tasintajwar6157]

Sir,in the example with potential difference of 1.5 V, what if there was no bulb, then positive charges will still keep on flowing from positive side to negative(i.e:electrons will keep on moving from negative to positive side of battery).But there wouldn't be any resistance as per our assumption, so no heat will be generated.Then will it still do 1.5 J work/coloumb?

[@jibankrishnamuhuri5518]

Exactly i m thinking the same ...did ypu get the answer?

[@meltdown6856]

I love you Khan academy

[@Mayank-jp5sm]

Since energy can neither be created nor destroyed ,what about the kinetic energy of positive charge .Are we neglecting it against heat loss? Bcz we r considering complete potential energy supplied by battery going in heat loss in bulb then what about the movement of charge in wires and bulbs. Plz explain sir.

[@sonicstorm4354]

This guy is a literal Gigachad

[@florentinosanchez3969]

Nice video

[@bhartitravels8909]

Thanks for this video

[@i_yatra]

At 11:58 u said that in physics whenever we lose energy we do work, but when we push wall, we transfer energy to wall but no work is done as work is fdcostheta.

[@KhanAcademyIndiaEnglish]

You are right, technically that statement isn't very accurate - thanks for pointing it out. It works as long as we are talking about mechanical energy (kinetic/potential). You can transfer heat without doing any mechanical work. In your example, your chemical energy is converted to heat.

[@jibankrishnamuhuri5518]

@@KhanAcademyIndiaEnglish Can u tell me if i connect only a wire to the bettery ..no bulb is involved ... then the electrons won't loss any energy..then what will happen?..electrons will continuously gain energy while passing through the bettery...?... confuse

[@NewtonBaba_]

Sir does potential energy of charge convert into kinetic energy?❤

[@user-lq5uj4xq1c]

Finally i get it💖😭

[@saritakaithwas9762]

Sir, you are amazing💕😍💕😍💕😍💕😍

[@techniker8745]

works even for collage students!!

[@haripriyadebnath7969]

Thankyousomuch sir!

[@Arunkumar-ee4gb]

🤩😍

[@michaelc2644]

In one video you explained that current is the smount of electron movement in a second. Excellent. But here you tell us nothing conctret. What is voltage really? Potential energy hss no teal meaning. This, "you csn think of it as" is so unhelpful. Just ssy what it actually is, please.

[@jibankrishnamuhuri5518]

Can u tell me if i connect only a wire to the bettery ..no bulb is involved ... then the electrons won't loss any energy..then what will happen?..electrons will continuously gain energy while passing through the bettery...?... confuse

[@vianaalimentar1663]

Thank you very much

[@talhashahid484]

❤️❤️❤️

[@guadalupe53]

For creating the electric current motion, you explained that positive terminal of the batery pushes the charges away from them, and the negative terminal of the battery pulls towards it. I understand that, but what if instead of having a negative terminal we have another positive terminal but "more positive"? I think there will still be a potencial difference because the charges of the terminals will be different, but, will both positive terminals push the positives charges away from them? (sorry for my bad english)

[@KhanAcademyIndiaEnglish]

In that case, the "more positive" terminal will push with stronger force than the other terminal. Hence it will end up pushing the charges away. But I am not sure if in reality such a battery exist :)

[@AdarshSharma-en4rc]

What happen if we connect negative terminal of a battery with positive terminal of another battery?will current flow ?