Potentiometer - Current Electricity | Class 12 | IIT JEE Main | NEET | JEE Physics | Mohit Goenka
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- Опубліковано 10 жов 2024
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Potentiometer Working Principle
The potentiometer consists of L which is a long resistive wire and a battery of known EMF V whose voltage is known as driver cell voltage. Assume a primary circuit arrangement by connecting the two ends of L to the battery terminals. One end of the primary circuit is connected to the cell whose EMF E is to be measured and the other end is connected to galvanometer G. This circuit is assumed to be a secondary circuit. The working principle depends on the potential across any portion of the wire which is directly proportional to the length of the wire that has a uniform cross-sectional area and current flow is constant.
#Potentiometer #CurrentElectricity #Eduniti
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About Faculty-
Completed Bachelors and Masters from IIT Kharagpur. Having an experience of +3 Years in teaching I reckoned the urge within me to help students appreciate the subject by delivering the toughest concept in simplest manner through practical demonstrations and visual aids.
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Sir the best thing about your lectures is the time in which the whole topic is covered properly , really nice .
Thanx dear
Exactly
Absolutely true!!!!
Bhaiya in which college are u right now? 🙌🏻🤔😇
@@josh15h3r3 He has already graduated, and that too from IIT Kharagpur 😎
0:32 - Application (introduction)
1:00 - Why not voltmeter ?
2:34 - Principal
4:44 - Finding Emf
14:47 - Finding internal resistance
❤
I was Always confused in this sub-topic but This topic got cleared Today. Thank you Bhaiya 🙏
Always welcome
nice pfp btw aapka IIT mein hua kya??
IIT-ek prem katha
Mai doond rha tha apne bhavishye ko
ki maine suna about jee
confidence aur pride ke chalte maine bola
hum bhi kar lenge iit
phir kiya join institute
starting me bada maza aaya
dosto ke saath padhke aur khake
1 saal maze lutaya
badme toota flow, aur man bikhra
socha kya hai iit, kyu hi mai kr rha
ek mahina yahi socha mai nikala
jab time kam pada, tabh mai bhaga
2 mahine me syllabus rush kiya
tension me har din roya
lecture pe lecture, dpp pe dpp karke
mano maine apna bachpan khoya
phir aaya jee mains,
subhe subhe utha aur gaya
exam ke saare questions khatam karke
mai dukhi hoke aaya
socha second attempt me phodunga
uske liye betha padne
ab lagi cheeze easy
toh maze wapis aane lage
second attempt ki baari aayi
mai chati chaudke paper likhne gaya
boht marks ka paper deke samaj aaya
ki cut off hi clear nhi hua
man hara, bhatke soch pe pada
zindagi pe full stop lagane ke khayal aaye
but yaad dilaya ki
ye sirf comma hai, full stop nhi
phir lagadi maine puri jaan for bitsat
2 mahine kuch nhi socha
abhi 4th hai, 24 ko exam
ye poem ka end, tabh edit karke hoga
zindagi mai aayengi dukhi, samasya aur peeda
lekin man ki aawaz sune waalo ko
milti hai inam ka phal meetha
-written and directed by a current BITSAT aspirant
Wheter i cleared or not will be known on 24, if you want to know just comment and i'll reply.
UPDATE: BITSAT first attempt finished and i got 231 marks. Isse kuch nhi milega. Trying my best for second attempt. please pray for me
Kaisa rha result
@@SrishtiSingh-ek1hf behen 23rd ko exam hai, uss din reply kario, zaruru bataunga
@@Anonymous_baka634 okay but bahut achha poem hai:)
@@SrishtiSingh-ek1hf thanks
@@Anonymous_baka634 you basically narrated my story 🤧
You got 1M subscribers soon because your videos are to good for us ♥️♥️
And you will get 0 soon in English because your concept of tenses is not good for us🖤🖤
@@VladmirPutin232 haha
@@VladmirPutin232 😂
@@VladmirPutin232 u roasted his sentence by saying you will get as well as you roasted him
@@VladmirPutin232 Abe grammar ke teacher at least usne indirectly thanks bola aur tune 🤣🤣
Really...that stdnts who are unknown to ur channel are very unlucky😎😎 kya mst smjhate hai aap sir♥️♥️
yaar kui aise he chemistry or maths ke channel bata do 😭😭😭😭 sir you are the best
maths k lie neha mam h aur chemsitry me locha h abhi no one
@@vivaansaxena-gb6fkchemistry ke liye simple concise
Hogaya bhai JEE? Ab baki exams ke liye to ye dekhna hi hoga 😂😂
Bhai kitne aaye 2nd attempt me...
1) done for bitsat
2) i think phir se dekhna padega for smooth solving
3) concept samajh agaya !
Thank u sir ! so grateful to be a part of ur community nd to be ur student!
great dear
what was ur mains percentile
Thank you very much sir... I am completing my pending topics one by one through these videos. 😊
Great
Day 2/20 done sir
Thank u sir
Ab ja k samajh aaya potentiometer
M hmesha skip kr deta ye topic but Aaj iska mechanism pta chal gya thank you sir 🙏🥰🥰🥰
thanks to bhahot chota shabad hai ...sir bhahot helpfful video tha...all concepts crystal clear......dhanyewaadam
Crystal clear with this topic now...was facing trouble with this..it was taught to me like soo complicated...TYSM for this lecture sir
You're welcome 😊
i studies from many teacher but always confuse now i never forgot this method properly
thankyou so much sir
love you sir
keep learning
Pehli bar smjh aya ye topic....thanks a lot!!
Welcome dear
@@mohitgoenka99 bhaiya kl se ajtak maine jitne potentio k sawal lagagye h sab lag gye I m neet aspirant isse phle ajtak nae smjha tha ye topic
Sir its due rqst ab bta skte ho apke jo vdos h wo optical instruments k wo neet aspirant dkh skte h kya sir....sir or modern phy me nuclei ch sahi karna h uske liye kaunsi vdo dkhu?
@@Learnershe Yes You can watch Optical Instruments
For Modern Physics do these:
🚀 Atomic Physics Revision Video - ua-cam.com/video/9VKUnE3mpHk/v-deo.html
🚀 Photoelectric Effect Revision Video - ua-cam.com/video/24oTQp84jrk/v-deo.html
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🚀 Radioactivity Revision Video -
ua-cam.com/video/AdX3YBhQyog/v-deo.html
🚀 Nuclear Physics Revision Video - ua-cam.com/video/VDWqVahGixc/v-deo.html
sir i was akways cofuse abt this topic and it always seemed very ajeeb i must say but as u explained u perfectly made me understood its one of the simplest thing and now am confident with this ki kisi aur ko bhi samja skta hu abto thanx aa lotttttttt sir u were always there for me thnx and for all of us
One thing will always remain constant for your channel sir, that whoever comes here with some hope never goes disappointed! Got my concept cleared and feeling confident. ❣️💯
Thnx dear
Every single point has covered in deep analysis within few minutes...REALLY AMAZING 😍🔥🔥🔥🔥
Every part of concept is cleared
Day 2/20 : thank u sir 🙂
Kitna din kia follow bro 🙂
EXTREMELY HELPFUL FOR BOARD PREPARATION (MAHARASHTRA BOARD)
thankyou so much sirr ..finally i cleared my doubts in this topic very quickly and properly in a very short period of time
Very well explained sir.
I was not getting this topic earlier but now the concept is cleared because of you.
Thank you sir 🙏🙏🙏🙏🙏
Welcome dear
Potentiometer
Comparing emf of 2 cell formula
E1/E2=L1/L2
Where E1 E2 are emf of 2 cells and L1 L2 are length at which galvanometer shows zero deflection for each cell respectively.
Sir i didn't have much idea of this topic and it always seemed a bit confusing but you've explained it in one of the best ways where even a student who has not even studied this topic completely understands it ig. Thanks alot Sir.
Another approach to find internal resistance:
Directly use the equivalent emf formula and equate it to the potential drop across the null point .
May God give u everything in life! Thank u so much sir!
So nice of you
sir apne itna calmly samjhaya mere sare doubts clear hogye thank you so much sir
Literally saying not expected this type of content in 21 mins 🔥hat soff sir
thnx dear
Sir after this lec revision I was able to solve the last question directly in my mind....thanks
step 1: find K
step 2: equate potentials
Thank you so much sir😀
This is the best channel i have ever found of physics, bhai sahab itna ezy explanation, just looking like a wow.☺☺☺☺☺☺☺
3:03 🤣Sentence padha hamne Kuch samaj me nhi aya hoga.......was epic line....3:03
Best teacher for physics
Best video on potentiometer .Thankyou sir
Welcome dear
Pranam sir 🙏🏻
Being a jee 2021 aspirant i wanna tell u that in my previous 3 attempts my overall best score is 99.7 percentile .. my percentile in physics is bit low coz i don't have knowledge abt optical instruments , electrical instruments , communication system and vernier calliper n screw gauge .. but this tym i have completed these topics with the help of ur videos nd i m damn sure that this tym i will get perfect 100 in physics nd u r the only person who deserve all the praise for it sir .. thank you so much ❤️ if i will get a chance to tell smthng abt my teachers on any platform .. u r surely gonna be there in physics field .. thank you sir
I am really glad to make any difference in your result or confidence. Thanx for expressing yourself.
which clg bro
Sir, you teach extraordinarily well in such a small age, you make my concept crystal clear, hope i get quesn from this topic in jee🙏🙏🙏🙏🙏🙏🙏😁
Sir i wish I could tell you that how much easy you made it for me 🥺
I love you ❤ Sir, charansparsh
All the best
I got it man😅😂
SIRR THNKUU SOOO SOOO SOSO SOO MUCH 🥺❤️❤️❤️❤️
CANT EXPRESS HOW I FELL RIGHT NOW IN WORDS
I AM A JEE 2022 ASPIRANT ( DROPPER ) AND I REGRET THAT WHY I DIDN'T WATCHED IT EARLIER
BUT NO WORRIES
ATLEAST NOW I'VE WATCHED IT ❤️
Keep learning dear
Mock me kitne bn rhe ?
This the most efficient channel i have ever seen on youtube....
Sirr Thank you so much, I had never understood this topic but now I feel confident that I will solve most of the questions of potentiometer
Upar vale circuit ko niche vale circuit se koi mtlb nahi haii❤️
Your endeavors are too great to be explained..may god bless u sir jii.
So nice of you
@@mohitgoenka99 I wish!..aapka channel mujhe pahle milta..love u a lot sir.
Best explanation on potentiometer...
In jee advanced 2021 ,I had left the potentiometer question because I didn't understand this topic , but now this topic is crystal clear
Thank you so much sir...
All the best
@@mohitgoenka99 Thank you so much sir
this topic is deleted from jee 2024, you can skip if you want
Really
That's why I was delaying this lcture.
Cuz in my sub conscious mind I knew that😅
Bhai mere aaj ka paper jake dekho NTA ne firse chutiya bana diya potentiometer pe question puch rkha hai single correct mein chhod bhi nhi sakte....NEVER TRUST NTA
@rahuljoshi aaj cut gya tumhara
@@aryanmishra5118 from what i am hearing, it was only mentioned in the question, not its application
@@aryanmishra5118 sahi kaha😂 humara naa Kate isiliye aaye hain yahan😢
Thank you sir..
You made this one very quickly!!
Most Welcome !
Thanku very much srr g
Ab bina formula yaad kiye hii potentiometer k questions solve hone lge h
🙏🙏❤️❤️❤️
Keep up the good work sir!!
Super underrated channel
Einstein bhi padhne ka aa gaye sir 🥺
Sir Aapne ek glti kr di Potentiometer mai Primary cell ki polarity reverse kr rkhi h jbaki +Terminal Point A ke pass aayega
Love you sir
Wish all the very best
Your journey is most heartfull in so many students
thanx dear
चमकता हुआ सितारा है। गुरु जी
mei hamesha confuse rehta tha isme .... doubts rehte thay ..finally cleared ....
thanks to you sir this concept is crystal clear to me🙏🙏🙏
My jee is on 6 and this topic was the one which was creating trouble in my mind and after this vdo i can solve these type of questions with full confidence . Thank You So Much Sir ❤❤
Bhaiya dil se thank you iss topic me pehle bahut confuse tha ab to bahut easy lag raha h dhanyawad 💕
Thank u so much sir .you are best explain er .
Welcome and thnx dear
SIR, 19:56 shyad 3 nhi aayega r aayega, AM I RIGHT?.................... AGAR r liya toh 4.5 ohms aarha hai.
Thank you sir for such concise lectures on every topic!!
Mai pata nahi kyu itne time se iska formula ratt raha tha aapne pura concept samjha diya.. Thank you sir
From current electricity i-card
I was always confused in this topic of potentiometer, but now I am confident in this topic. *THAKS A LOT BHAIYA*
Most welcome
Mja aagya sir mujhe aapke baare mein PTA hi nahi tha abtk saare concepts strong ho jaate🙂
Thanku sir 🙏. Understood it without having any doubts left.💯
Saar, i have mension this chanel to my vilage friend too, he always in 12. so i tolding him that do physic by you. he is a very hapy too. We both well creak IIT exam by physic by you thenk u sar. Only small internat problam here is but we will manage
keep learning dear
#learnlikeneverbefore
Finally done ill be un top 5k
All the best bhai ❤🎉
kahe ka all the best apna competition hai vo
TQ so much sirji ❤️🙏🏻
I always gotta confused in this topic but now it's crystal clr 💫
thankyou so much sir for detailed explaination.
Sir your every single word directly touches our heart and mind ♥️❤️🙏🙏
Kafi late pta chla channel ke barre me
Pr thanx
Finally concept clear hue
Best video ever❤ each and every concept got Cleared in such a low time tysm sir😊
Glad to hear that
I studied this from 2 teachers but couldn't understand it.
U made it so simple thank you so much sir 🔥
It's my pleasure
Note for my future reference :
DONT YOU DARE GET CONFUSED !..NV sir ne jo tumhe sikhaya tha usne diagram upside down tha
KIM : polarity of batteries par dhyan do ...agr woh ulti hui toh Point potential method won't work and Hume EMF or r nahi mil payega!
Jis battery ki internal r find karni hoti hai ..uska EMF must be lower than given battery ka EMF (u know y) otherwise hume r nahi milegi
This topic has 2 types of ques :
Type 1 : jisme e ( of the battery jiska circuit galvanometer se juda hota hai ) nikalna hota hai!..just equate V ! At 9:27 u know what's V here! It's the EMF
Type 2 : jisme r nikalni hoti hai!..toh hum Galvanometer se directly Jude circuit me ek R lagate hai parallel..aur ab is circuit me bhi i hota hai!...(ab yaha joh Naya V diff niklega na..usme tum...."V = EMF+ i r " ki jagah "V= iR" (R is joh nayi resistance parallel lagayi ) use Karo calc lengthy nahi hogi!!...kyoki parallel connection tha toh V diff at ends same hoga!..u buddhu question ko lengthy tum khud bana deti ho!..hota toh woh easy hai!
Bas baki everything is badhiya!😁✨
I love to read your analysis
great dear
One more thing to add, jis battery ki internal r find karni hoti hai uska emf should be lower than the given battery emf because agr Aisa nhi hua toh null point nhi aayega potentiometer me.
@@shorty5950 i wrote this already
18:41 do example and apply sums
Thank you I am doing final revision and thanks for clearing concept like crystal..... ❤
Exam is on 11 sep.
bhut bhut dhanyawad sir
mai bina dekhe hi like kar deta hu sir becoz i know you will teach best in short time main thing this is!!!!!!!!!!!!!!!!!
Thnk you sir for getting the concept cleared, I was bit lazy in my yesterday's class where this topic was taught so i didn't understand that well but today by you it got cleared thnx sir
17:21 sir if you finding potential difference across AC, then why are you considering another further new points A and C and then finding it.
Why aren't you finding it directly across A and C.
So will be
V(ac) = ( E × r ) / (r + R)
Like the internal resistance (r) not (R) whuch you have used?
Is this wrong
this topic is removed dear
you may skip it
@@mohitgoenka99thankyou sir for your instant reply, but I'm from HSC board and also preparing for other entrance exams too and this topic isn't removed so I wanted to learn it.
Bhai waise bhi kar sakte hai , but tune galat nikala hai Vac
Jo tune nikala hai usko V me se minus Karo tab aaye sahi tera bhi !!!
thanks bhaiiya,potentiometer ka backlog hote hote bach geya....😊❤😊😊
Now I'm Comfortable with this Topic. Thank You Sir ❤
The best lecture which i could find ❤❤
Thank you sir ji...sach mein..main ye internal resistance wala solve hi nahi pr paati thi...or aaj maine last Q mind mein hi solve krliya..thank you sir ji
Whenever I revised potentiometer I just by your video in 2x and complete in just 5 min and become crystal clear 😀😀
excellent dear
TQ SIR!! I💖
SUPER EXPLANATION!!!🔥🔥🔥
Welcome 👍
Sir the way in which u explain is really awesome 😊, I really liked ur content and it helped me to revise my topics , (: I will definitely share it with my friends
Keep making such amazing videos 👍🏻👍🏻👍🏻👍🏻🙏🏻
Great
✔ day 12 dhanwad sirr jii❣
At 14:20
How l° = 12 ? Whole wire is 10 meter ?
Sir please reply.
sir , potentiometer is removed in the syllabus ryt , so can i watch this video??
skip it dear now
thank you sir i was mugging the formulae of this topic you explained the concept very well
Sir you are like a blessing
Thank u very much sir...
Amazing video
Most welcome
Thank you so much bhaiya 🥰 bohot acha session tha
Thank you so much sir , Crystal Clear 🤩
Thank you so much sir this video is a life saver❤
i know i dont need to tell you this butyou are the best😊
Thank you sir ....❤️understood the concepts like never before....now I will watch the pyq sessions😊
All the best
Is this in advance syllabus?
Also pls make a video on whats in advance and what was inly for mains , seeing syllabus doens't clear... request to mohit sir❤
yes i am also confuses cos meter bridge likha hai and the post office box so potentiometer nhi likha to ye krna hai ki nhi smjh hi nhi aa rha
solving without using pen🤩 thanks sir..
Crystal clear! 💎
THANKS BHAIYA, MAY GOD FULFIL ALL YOUR DREAMS! ❤
Sir you deserve more than 100 M subs 😊❤
Thanks a lot sir .
Most welcome