Reverse biasing a PN junction | Class 12 (India) | Physics | Khan Academy

[@vijaypawar4602]

It's great to hear teachers like you, teaching with full enthusiasm and the animations are so catalytic giving crystal clear explanations . huge Respect and love.

[@nevi_g]

My head has been literally hurting because I couldn’t figure out this , by the text book , but wow ! You made it look so easy and effortless . Thankyou so much 🙏🏻

[@soumyasaloni1998]

same!!

[@akshatgoel6831]

The way you have made things clear, I can only say that May God Bless You. Few people can pluck the fruit of knowledge so perfectly and serve it on the platter of a curious student. #respect

[@rakesharora7714]

Thanks a lot. Great teachers. Helping society.

[@she_sserapearls]

I understood nothing from other videos on KZbin, and my textbook..... But this was exactly what helped me...thank you sir ❤

[@PoojaShankar-p3d]

Thank you sir .this video is simply brilliant sir❤

[@260eeeprasuna2]

Your animations are tremendous...

[@zaeemAtif]

MAKING THINGS INTRESTING..... AMAZING ..................

[@loveindia302]

Which state bro?

[@zaeemAtif]

@@loveindia302 delhi belly

[@SreenikethanI]

@@zaeemAtif bruh 😂

[@homeofentertainment1745]

A nice video. Keep it up khan academy. Very educative

[@mahmouddesokey3818]

Excellent 👏

[@mcs5305]

thank you. my electronics teacher sucks and you explained this one better

[@PrimeStrive]

One doubt !!... In the previous video You said that after diffusion charges destroy each other but what about this , here is something totally different they are constituting to diffusion current and depletion layer getting narrower.( but charges don't get destroyed ) ....why is it so ?

[@Zfalak19]

In Forward, neg terminal of the battery reple the electron towards p type and positive reple the holes towards n type ...so they diffuse eachother near dep region..in this one reverse bias, there is no diffusion ...the liitle bit current is conducting only bcz of minority charge charier...here neg terminal is connect to p type so the e from the p side which is minority charge carries will repel towards n type nd similar fir holes so this little bit flow is because of drift current. 😅😅

[@Zfalak19]

Hope it will help you..😅

[@anugrahapadmanaban893]

Great Videos for english medium learners

[@user-ep4hz6nq5y]

sir pls take lecture for mosfets also

[@vanitaghogare3954]

Very nice explanation sir

[@dynamicverse9419]

Sir is drift current and reverse saturation current same ..

[@harry9334]

So nicely explained.. Your voice is pretty much good😃😃

[@GamerINCARNATE]

Why drift current remains constant?

[@gvcallen]

Because the drift current is due to the minority charge carriers, and there are so few of them, we can analyse it as being constant (in reality it will change slightly)

[@mangkuihmar]

if majority charge carriers flows from one region to another due to diffusion only then what is the use of connecting the external power source? I am a little confused by that part.

[@laibakhan8380]

Thankyouu man.

[@tlaeditsog]

Depletion player increase and resistance increase in backward bias

[@somihmar0202]

Thank you very much 🖤

[@livinglife3352]

Sir, could you please post videos on basics of electronic circuits. Self study is time consuming and creating gaps in understanding. Would be very helpful if streamlining posts on electronic circuits and gates All your posts are most interesting. Sir, we appreciate for all your contributions on KZbin channel.

[@gauravav1635]

But why dont the electrons travel to the p side via the external circuit (battery) and travel through the holes , then aided by the electric field sweep through Dep. layer and complete the circuit.

[@hafsafatima1193]

Electrons if happened to travel in p region through external circuit they will recombine with holes of p region and will vanish by becoming neutral similarly in n region. Sir plz tell me I m right

[@Accountt_4]

NICE ANIMATION👍

[@richard5814]

Great Tutorial! I have a question: does the electric field's direction remains the same for forward and reverse bias?

[@Bo_Freibs]

yes, it just changes in magnitude, following the potential gradient

[@aestheticstudyyy7597]

Sir holes and electrons recombine each other and charges will be more exposed,

[@PrzestronnyMistrz-ly8rp]

how come minority charge carriers(holes in N-type) even enter the electric field of ions(Depletion region), when there is a positive charge at the beginning of the field? Shouldn't them be repelled by it and not allowed to even enter the field?

[@nick45be]

Why the electrons of N side doesn't pass through the wire and make the current different fron zero but only the minority electrons of P side pass through the wire making the current almost equal to zero?

[@gunajothisekar5053]

It is due to the potential barrier

[@Another_anonymous_user]

​@@gunajothisekar5053The potential barrier exists due to the field. The field supports the passing of electrons, the minority charge carriers of the p-side, to the n-side, doesn't it? How does it prevent the flowing of electrons from the n-semiconductor to the positive terminal of the battery? What it does is preventing the flow of electrons from the n-type semiconductor to the p-type. Why don't electrons flow from the negative terminal into the p-type semiconductor, from the p-type semiconductor to the n-type, and then from the n-type to the positive terminal? The electric field doesn't oppose any of this, does it?

[@Farhan-sv1eh]

❤

[@martinstojanovski8021]

This is confusing me also.Why the electrons from the negative side don't fill the holes in the P material?A teacher actually said to me that they are filling the holes but they cannot cross the barrier later.Thank you.

[@KhanAcademyIndiaEnglish]

Yes, I guess you will find more details in our previous videos. The concept of depletion region and potential barriers are explained in detail.

[@martinstojanovski8021]

@@KhanAcademyIndiaEnglish I've watched them all.Maybe I've missed something.Thank you anyway.

[@BlackRockExecutive]

In fact, it's the recombination that leads to current. Every time an electron and hole recombines, an electron flows through the external circuit to the other terminal.You can read more under recombination current.

[@prabhdeepsingh2916]

actually a good question.now according to me what happens is when the elctron from negative terminal flows to p type recombination occur and at the same time an electron is taken from n type and a hole is created whuch is again accelerated towards p type making the holes in p type pretty much constant.:>)

[@anumulavinodgaurav5404]

@@prabhdeepsingh2916 when electron is taken from the n type it doesn't create a hole it creates a positive ion

[@priyanshurao6967]

but one mistake ...initially there should some current due to minority charge carriers ...but sir you show it zero...

[@radheykrishna5478]

The channel is khan academy 'INDIA' but the english speaking of teacher reavels him foreigner .

[@shubhamgupta-qi9nk]

Well.. U never know

[@tasneem6427]

He has a mixed accent actually. It doesn’t sound completely foreign

[@fukreyboyz4077]

Actually I can notice an indianess in his accent ... so he is Indian for sure .. he might be faking the English accent.. but I m pretty sure ..he is Indian

[@priyanshurao6967]

ab smj aaya hai....😂😂😂

[@catharperfect7036]

Ladies and Gentleman, we have directional properties -> (enter party noises here)

[@dynamitedude7823]

good lecture but just stop with those lame jokes its so cringe

[@swayammishra8491]

What joke ?

[@dynamitedude7823]

Now I don’t remeber what kind of jokes he cracked,😢

[@swayammishra8491]

@@dynamitedude7823 🤦 , watch it again to revise the concept as well as the cringe joke

[@dynamitedude7823]

now the exams have come,literally just one more day and I would have listened to this dude all day😢

[@dynamitedude7823]

also if you have time do study🦥

[@srilakshmidevulapalli6999]

❤

[@shauryaverma2705]

❤️