Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App. Download the App from Google Playstore ( bit.ly/2SHIPW6 ) Physicswallah Instagram Handle : instagram.com/physicswallah/ Physicswallah Facebook Page: facebook.com/physicswallah Physicswallah Twitter Account : twitter.com/PhysicswallahAP?s=20 Physicswallah App on Google Play Store : bit.ly/2SHIPW6 Physicswallah Website: physicswallahalakhpandey.com/ LAKSHYA Batch(2020-21) Join the Batch on Physicswallah App bit.ly/2SHIPW6 Registration Open!!!! What will you get in the Lakshya Batch? 1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey. 2)Live Classes and recorded Video Lectures (New, different from those on UA-cam) 3)PDF Notes of each class. 4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level. 5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture. 6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021) 7)In case you missed a live class, you can see its recording. 8)You can view the videos any number of times. 9)Each chapter will be discussed in detail with all concepts and numericals 10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams. ****Test Series for XI & XII**** We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year. The test series follows very logical sequence of Basic to Advance questions.& Evaluation of Test and Solution to all the questions at the end of the test. ========================================================= For PDF Notes and best Assignments visit @ physicswallahalakhpandey.com/ Follow us on: Instagram instagram.com/physicswallah/ Facebook: facebook.com/physicswallah =========================================================== Class 12 chapter 3 : Current Electricity 01 : Electric Current and Drift Velocity JEE MAINS/NEET ua-cam.com/video/IdAji34f7TE/v-deo.html Current Electricity 02 : Resistance - Defination , Origin and Numericals on R=pl/A JEE /NEET ua-cam.com/video/01OCG8KM1ps/v-deo.html Current Electricity 03 : Effect of Temperature on Resistance or Resistivity JEE MAINS/NEET ua-cam.com/video/PeqbB7V283w/v-deo.html Current Electricity 04 : Colour Coding of Carbon Resistor I Boards Topic Colour coding of Resistance ua-cam.com/video/QIoXYmf_9t4/v-deo.html Current Electricity 05 : Ohm's Law (Scalar and Vector Form ) and Current Density JEE MAINS/NEET ua-cam.com/video/svbuh5td5qg/v-deo.html Current Electricity 06 : Combination of Resistors - Part 1 (Basics ) - JEE MAINS/NEET ua-cam.com/video/1u0EIGzoHwM/v-deo.html Current Electricity 07 : Combination Of Resistors - Part 2 ( Potential Method and Infinite Network) ua-cam.com/video/0En0_JEF1jU/v-deo.html Current Electricity 08 : Wheat Stone Bridge - Combination of Resistors - Part 3 JEE MAINS/NEET ua-cam.com/video/FtNBW9XQ5tw/v-deo.html Current Electricity 09 : Symmetry Rule : Combination of Resistor -4 : Most Complex Circuits JEE/NEET ua-cam.com/video/cUhVJ5of918/v-deo.html Current Electricity 10 : Cells, EMF , Internal Resistance and Terminal Voltage JEE MAINS/NEET ua-cam.com/video/hxkEZBKd3eA/v-deo.html Current Electricity 11: Kirchhoff's Law - Kirchhoff's Current Law & Kirchhoff's Voltage Law JEE/NEET ua-cam.com/video/5FcEqe-FAMc/v-deo.html Current Electricity 12 : Combination Of Cells -Series, Parallel and Mixed Grouping of Cells JEE/NEET ua-cam.com/video/pXwnnlzhKSE/v-deo.html Current Electricity 13 : Electrical Power and Energy I Which BULB Glows Brighter ?JEE/NEET ua-cam.com/video/14v7NeWkTF8/v-deo.html Current Electricity 14 : Meter Bridge - All Concepts with Previous year IIT Problems JEE/NEET ua-cam.com/video/ypXTD2hPrY8/v-deo.html Current Electricity 15 : PotentioMeter :Measurement of EMF of Cell and internal resistance of Cell ua-cam.com/video/4VgQ-Ip9Guo/v-deo.html Current Electricity 16 : Conversion Of Galvanometer to Ammeter & Voltmeter JEE /NEET ua-cam.com/video/pJZ73CR2oR8/v-deo.html
#jaandeka how in 40:59 vale question me resistance me sabke paas same electric potential Aaya and then sir use it in another question also Plz reply anyone
Can u plz tell me at 30.00 jabh hum beech vaha circuit solve kerte hai then hamne usse wheat stone bridge kyu nai Bana ??? Balki hamne first Valle circuit Mai usse wheatstone bridge Mann Liya why is it sooo ???........ Plz help me out if someone understand
@@RB-yw1tt rachit bhardwaj Bro pahli baat at 40.11 per sabhke pass potential same nai Gaya ........ Vo bulb ka potential hai 220V , starting Mai sir ne kaha thi ye baat ..... If u still can't understand then start Ur vedio again from 32.00 tuhje vaha se samaj Mai aah jayega question samajne mai
Main apko 11 th pe nhi pehchanta tha , agar tabse apki video dekhta to aj main bohot dur jata,u are the best teacher sir,I have many tution teacher but nobody can match your level.u are the greatest teacher I have ever seen.
While watching this video i found that u completed 5 million subscribers...actually its not 5 million subscribers its respect and love from 5 million families and guess how much blessed we are to have a god like teacher frnd whatever to say is less and thats u sir...truely thank u... during this two years of lockdown ur videos helped me alot to be on my original track...thank u sir... words are less to express ur role in life of students like us...i know u dont have time to read this comment but no matter... u r legend...true legend
Literally, once a student asked me physics kaha se padh rahe ho, I told physics wallah he said physics wallah !who. My whole class like" physics wallah ko nahi jante"
@@risingaditya4192 yaa bro sorry for my words you cleared my misconception Until i saw your reply i thought it was 20th century as 2021 starts with 20 thnx bro sorry
At 31:27 sir (I) is Balanced wheat stone bridge . So (I) and (III) have same power dissapeated because both have same equivalent resistance of 1 ohm. Correct option should be (II)>(I)=(III) Hence please check it. Power on I :- 9W On II :- 18W On III:-9W
but i think you are wrong read this At 30:00 the second circuit is not WHEATSTONE since all 3 circuits are connected to a same point having same potential difference which shows that they are in parallel but in wheatstone we cannot differ between series and parallel as they are not connected to a common point
We people are very lucky to have such a brilliant teacher in our life.......who guides us with his motivation and most important his cute delicate simple smile
Hello sir , I'm from Bangladesh.... preparing for my upcoming BUET (BANGLADESH UNIVERSITY OF ENGINEERING TECHNOLOGY) admission exam . Your videos are very much helpful . Thanks a lot for sharing all these concepts. ❤️
At 30:00 the second circuit is not WHEATSTONE since all 3 circuits are connected to a same point having same potential difference which shows that they are in parallel but in wheatstone we cannot differ between series and parallel as they are not connected to a common point
The short method of finding power of second bulb if power and voltage of first bulb is given: You can use unitary method, if you use unitary method, multiply your answer by multiple of the potential of first bulb { V1 } given in question. For example, a bulb is given of 220 V and 100 W and second bulb is given of 110 V, then find power in second bulb.... Answer: 220V -> 100W 110V -> x x = 110V * 100W / 220V x = 50 110 is 1/2 multiple of 220 i.e, V2 = 1/2 V1 therefore, now multiply the multiple of V1 with x P = x * 1/2 P = 50 * 1/2 P = 25W keep units in SI units only
In INDIA I can guarantee you there is not a single student who has not seen the old pw vids where sir himself taught….may not be a chapter also but at least one lecture everyone has seen..I can guarantee you…
Sir I think the last question of the class has multiple answers,as both option b ans d are correct . Since 100/(220)^2=60/(220)^2+40/(220)^2. Please like the comment if correct 🙏😊
Today in my school , Fans are rotating slowly . Obviously the voltage is low , but I don't the concept yet , but after coming from school , watched this lecture and at 34:33 got my answer. Thank you sir for Making this precious lecture.
58:50 in this last question why can't b)option be also the answer? How: with the values of P given, we can say 100=60 +40 Then P1=P2+ P3 ( by cancelling common V^2 ) we get 1/R100= 1/R60+1/R40
No bro, you need to use current in the upper circuit cause they are in series. So W1=i^2 R1 and W2=i^2R2 and replace .i with V/(R1+R2) AND FOR W3= V^2/R3. HOPE IT HELPS 😃
Sir maine pehli baar apse padha hai kyuki mujhe ye topic smjh nhi aa rha tha and I must say ki log jo aapki itni tarif karte hai you totally deserve it all !! Sab kuch conceptual clear kardiya thankyou so much ❤️✨
Dedicated to physics wallah- Dekh Dekh Dekh Tu kr na time paas Dekh vrna ho jaayega Future bavaal Dekh dekh dekh Tu kr na time paas Dekh vrna ho jaayega Tu behaal!!!! Toh kya Karein yaar!!! Toh toh toh !!! Physicswllah aaya Tu book toh nikaal!! Concept hoga clear.. Hilega ek ek sawaal Arai physics wallah aaya Toh book toh nikaal Ab toh ho jaayega.. PC mein Kamaal.. Dhanyawad! Behno and bhaiyo 🙏
58:50 sir chose option d which is correct but if you check the values,you'll find that 1/R100=1/R60+1/R40. So both answers are correct right? Correct me if I'm wrong.
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Sir i think last question should have two answers (b) and (d).But Option (b) will be incorrect if it was mentioned that these bulbs are kept at room temperature and their resistances depends on temperature. Bcoz resistance of each bulb will change differently with change in temp.
Sir ur teaching way is just similar as NV sir and i also explain similarity 1. Feel word 2. Unlike sound creation during teaching 3.repeating again and again aaya ki nhi 2 4. Crying during teaching But then also i like both of u
waise we can do IIT 2002 question 56:00 by using logic bulbs in parallel have equal voltage so III > (I,II) but in series bulb with lower power hase more brightness so II > I Hence III > II > I :)
Power Equations: P = i²R P = iV P = V²/R Energy Equations: Energy = V²t/R (if i = constant) Energy = iVt (if i = constant) Energy = i²Rt (if i = constant) Energy Equations: Energy = (integration)iVdt Energy = (integration)V²/R × dt Energy = (integration)i²Rdt
sir 31:30 in that question all equivalent resistance should be same (1)wheatstone bridge (2)Is also wheatstone bridge (3)as the common resistance is not considered, it is also same. So the ans should be p1 = p2 = p3
Sir u have done a mistake . At 40:46 ,for calculating resistance of each bulb u have taken p.d. of each bulb as 220 which is wrong because pd of whole combination is 220 and not across each bulb
No this is correct. Because the power rating is done on the basis of the Indian system that is 220V and the resistance is decided on the basis of that only.
40:22 जैसे Sir ने कहाँ that 220V में से कुछ 100W वाले bulb में जाएगा, कुछ 50W वाले bulb में, और कुछ 25W वाले bulb में. Then while calculating resistance, why potential difference 220V is taken same in all the 3 bulbs, though they are in series ? Please guide me... Thank u
@@rushiikeshjadhav yaa...I too agree on that. Kyuki p=vi hota h aur series me current,i constant hoga to power ko different hone ke liye voltage to alag hone is padega..
@Shruti S. See, there are two types of voltage (1) Voltage printed on the bulb. (2) Voltage supplied by the battery. Since voltage supplied by battery will not be equal in all. So, sir started finding resistance of each bulb i.e R=V^2/P where 'V' is not the voltage supplied by the battery. It is the voltage which is written on the bulb..
@@rushiikeshjadhav we are given power of bulbs with respect to 220 volts system. But bulb s' actual power is different. But, resistence in every case is same (for a particular material and temperature) hence resistence (of first bulb)=(220)^2/100 and so are the second and third bulb. Then we can calculate actual power with the helpnof resistance. Hope this helps😊😊😊😊
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Class 12 chapter 3 : Current Electricity 01 : Electric Current and Drift Velocity JEE MAINS/NEET
ua-cam.com/video/IdAji34f7TE/v-deo.html
Current Electricity 02 : Resistance - Defination , Origin and Numericals on R=pl/A JEE /NEET
ua-cam.com/video/01OCG8KM1ps/v-deo.html
Current Electricity 03 : Effect of Temperature on Resistance or Resistivity JEE MAINS/NEET
ua-cam.com/video/PeqbB7V283w/v-deo.html
Current Electricity 04 : Colour Coding of Carbon Resistor I Boards Topic Colour coding of Resistance
ua-cam.com/video/QIoXYmf_9t4/v-deo.html
Current Electricity 05 : Ohm's Law (Scalar and Vector Form ) and Current Density JEE MAINS/NEET
ua-cam.com/video/svbuh5td5qg/v-deo.html
Current Electricity 06 : Combination of Resistors - Part 1 (Basics ) - JEE MAINS/NEET
ua-cam.com/video/1u0EIGzoHwM/v-deo.html
Current Electricity 07 : Combination Of Resistors - Part 2 ( Potential Method and Infinite Network)
ua-cam.com/video/0En0_JEF1jU/v-deo.html
Current Electricity 08 : Wheat Stone Bridge - Combination of Resistors - Part 3 JEE MAINS/NEET
ua-cam.com/video/FtNBW9XQ5tw/v-deo.html
Current Electricity 09 : Symmetry Rule : Combination of Resistor -4 : Most Complex Circuits JEE/NEET
ua-cam.com/video/cUhVJ5of918/v-deo.html
Current Electricity 10 : Cells, EMF , Internal Resistance and Terminal Voltage JEE MAINS/NEET
ua-cam.com/video/hxkEZBKd3eA/v-deo.html
Current Electricity 11: Kirchhoff's Law - Kirchhoff's Current Law & Kirchhoff's Voltage Law JEE/NEET
ua-cam.com/video/5FcEqe-FAMc/v-deo.html
Current Electricity 12 : Combination Of Cells -Series, Parallel and Mixed Grouping of Cells JEE/NEET
ua-cam.com/video/pXwnnlzhKSE/v-deo.html
Current Electricity 13 : Electrical Power and Energy I Which BULB Glows Brighter ?JEE/NEET
ua-cam.com/video/14v7NeWkTF8/v-deo.html
Current Electricity 14 : Meter Bridge - All Concepts with Previous year IIT Problems JEE/NEET
ua-cam.com/video/ypXTD2hPrY8/v-deo.html
Current Electricity 15 : PotentioMeter :Measurement of EMF of Cell and internal resistance of Cell
ua-cam.com/video/4VgQ-Ip9Guo/v-deo.html
Current Electricity 16 : Conversion Of Galvanometer to Ammeter & Voltmeter JEE /NEET
ua-cam.com/video/pJZ73CR2oR8/v-deo.html
Gm sir
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last ques ka ans (a) hoga
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𝐓𝐚𝐛𝐥𝐞 𝐨𝐟 𝐂𝐨𝐧𝐭𝐚𝐧𝐭 :
1:57 : Energy and power concept
19:32 : Questions
27:00 : IIT 2008 Wallah sawal
32:32 : Bulb wallah concept
38:30 : Questions
51:59 : IIT 2002 Wallah sawal
57:25 : IIT 2010 Wallah sawal
𝐏𝐥𝐞𝐚𝐬𝐞 𝐋𝐢𝐤𝐞 🥺
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#jaandeka how in 40:59 vale question me resistance me sabke paas same electric potential Aaya and then sir use it in another question also
Plz reply anyone
Can u plz tell me at 30.00 jabh hum beech vaha circuit solve kerte hai then hamne usse wheat stone bridge kyu nai Bana ??? Balki hamne first Valle circuit Mai usse wheatstone bridge Mann Liya why is it sooo ???........ Plz help me out if someone understand
@@RB-yw1tt rachit bhardwaj Bro pahli baat at 40.11 per sabhke pass potential same nai Gaya ........ Vo bulb ka potential hai 220V , starting Mai sir ne kaha thi ye baat ..... If u still can't understand then start Ur vedio again from 32.00 tuhje vaha se samaj Mai aah jayega question samajne mai
@@RB-yw1tt hn bhai vo 220V m define rehti h na uski power in indian system isley V sb m same use kiya h sir n to find resistance.....
4 years old lectures are more powerful then my whole coaching classes
real
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Sir ki itni mehnat ke baad bhi Thank you type krne ka time ni mila?
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Main apko 11 th pe nhi pehchanta tha , agar tabse apki video dekhta to aj main bohot dur jata,u are the best teacher sir,I have many tution teacher but nobody can match your level.u are the greatest teacher I have ever seen.
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Abhi 11th mai jo hai unko recommend karo pw ke baareme
Probably you are South indian
Same here
While watching this video i found that u completed 5 million subscribers...actually its not 5 million subscribers its respect and love from 5 million families and guess how much blessed we are to have a god like teacher frnd whatever to say is less and thats u sir...truely thank u... during this two years of lockdown ur videos helped me alot to be on my original track...thank u sir... words are less to express ur role in life of students like us...i know u dont have time to read this comment but no matter... u r legend...true legend
A UA-camr , on who's statements we can rely upon. All the very best sir .
S G
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At 59:55 option (b) is also correct 💯💯💯
Yes
No bro its not because in option be in parrallel p=1/kr and series p=kr
@@sarveshking5622-mno b is also correct put values of resistance
Ya putting values of resistance we will get b
I was scrolling down comments to find somebody who commented that option (b) is also correct.
Bro is correct 💯💯💯
Best teacher of 21st century👍👍👍
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@@godson200 gaadi wala aya ghr se kchra nikaal
At 31:27 sir (I) is Balanced wheat stone bridge . So (I) and (III) have same power dissapeated because both have same equivalent resistance of 1 ohm.
Correct option should be (II)>(I)=(III)
Hence please check it.
Power on I :- 9W
On II :- 18W
On III:-9W
i also thought the same
but i think you are wrong read this
At 30:00 the second circuit is not WHEATSTONE since all 3 circuits are connected to a same point having same potential difference which shows that they are in parallel but in wheatstone we cannot differ between series and parallel as they are not connected to a common point
@Shibly Khan ?????
@Shibly Khan okey 😊 tnx .
@@rambadansingh5148the power on circuit (II) is actually 4.5W because the net resistance is 2ohm. So current through (II) will actually be 1.5A.
We people are very lucky to have such a brilliant teacher in our life.......who guides us with his motivation and most important his cute delicate simple smile
Sir, a small request after the completion of a chapter. Please upload a video only solving important tricky questions. Your teaching is Awesome!!!
Yes sirrrr
Baag yaha se gaadhe, khana khane ke bad hajhmula chaiye 😂😂😂
@@thealpha7351 jeher😂😂😂
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@@thealpha7351 pagal
It's about 2 years
Still I'm watching the videos for concept revision
25/3/22
*48:26** same yehi qstn tha jo merese nahi ho raha tha....wow! But aub mera doubt clear ho gaya thnx alakh sir* 💕💕💕💕💕
*BOHT BOHT DHANYAWAD* 🙏
Hello sir , I'm from Bangladesh.... preparing for my upcoming BUET (BANGLADESH UNIVERSITY OF ENGINEERING TECHNOLOGY) admission exam . Your videos are very much helpful . Thanks a lot for sharing all these concepts. ❤️
ভাই আপনি কোথায় পড়তেছেন এখন?
@@Chinmoy-Saha tor mohammad er kache
From Bangladesh 🎉
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At 30:00 the second circuit is not WHEATSTONE since all 3 circuits are connected to a same point having same potential difference which shows that they are in parallel but in wheatstone we cannot differ between series and parallel as they are not connected to a common point
thank you so much bro
Its not an example of wheatstone bridge, carefully see the difference in 1&2
Bhai to sir ne kb bola ye wheatstone h parallel hi to liya h
@adilverma because people like me get confused.
@@aryamaansethi8034 hope u understand now keep practicing
In 2030
Physics wallah=40M subscribers❤❤
bro he will beat pewdiepie
Not 40 he will gain 400 million subscribers
@@anubhavsingh2085 why 400 it is 4000
Bhai 2030 m bhut ho jayege
We make it possible
We love you sir!! Keep up the good work!! ☺️☺️🙏🏻🙏🏻
@@riteshtaxak7212 bhai Saab😂
We love uu
Sir Aapka hello bachho dialogue raat ko do baje bhi josh ko high krr deta ha ❤❤❤
Current Electricity used to be my weakest topic in class 10th but now i feel like its my strongest topic in physics!!
Aree yaar same mere sath v yahi thaa class 10th mai mujhe v electricity chapter nhi samajh ayaa thaa lekin ab 12 th mai sabse fadu chapter h mera 😊
Mere sath b yahi tha🤫🤫 or.mne 10.m ache se.phda.b ni🤭😅🤫🤫🤫
@@riyaprajapati8307 same mera v ap electricity chapter finish kr di
@@riyaprajapati8307 mera complete ho gya...ap instagram use krti ho..
Nh ji
Thank you sir....❤
~ a student of batch 2020- 21
Same
i scored 179 in my mains after learning from sir
and im now chilling in NIT Warangal
@@ishaanharbhajanka7887 in which attempt bro jan or sept?
@@ishaanharbhajanka7887 hardwork pays off! Congrats and good luck!
Who is in 2024😅?
Me😂
Me too
Present
For april attempt 😢😂
@@nandani4934hy
I will miss these classes when I go for engineering
7:46 Sir vo toh karna he padega. Kyoki resistance raaste ka kaanta he hai. 😅😅😅
Mozart ko bhi physics parna hai?
@@kritanuchatterjee8861 lelelelel
SIR AFTER 1 YEAR YOU WILL BE A
. GRRAT MOTIVATIOR
. BEST TEACHER
YOU WILL MAKE A IRRISPONSIBLE GUY , A DOCTOR
THANK YOU VERY VERY MUCH.
Irresponsible??
@@dikillgameing6582 irresponsible guy + sir's lecture = doctor(LOL) rip omicron
Lmao
@@ninja-bs7580 Well he'd we a doctor...but an irresponsible one😂😂
🥹meri to akhe bhar aayi bhai ne emoooshnal karidya irresponsible !?
Sab kahte h ki guru bhagwaan ke samaan hota h.....
But mere liye AAP Jaise guru hi bhagwaan h....
Thanks for this quality education......😍😍
The short method of finding power of second bulb if power and voltage of first bulb is given:
You can use unitary method, if you use unitary method, multiply your answer by multiple of the potential of first bulb { V1 } given in question.
For example,
a bulb is given of 220 V and 100 W and second bulb is given of 110 V, then find power in second bulb....
Answer: 220V -> 100W
110V -> x
x = 110V * 100W / 220V
x = 50
110 is 1/2 multiple of 220 i.e, V2 = 1/2 V1
therefore, now multiply the multiple of V1 with x
P = x * 1/2
P = 50 * 1/2
P = 25W
keep units in SI units only
Samajh nhi aaya
@@AmanKumar-ek9ux 😂
The only man...who has no hate comments....❤️🙌
Great Salute To This Talented And Wonderful Man...💯🤩
Crystal clear concept channel...💯🥰
In INDIA I can guarantee you there is not a single student who has not seen the old pw vids where sir himself taught….may not be a chapter also but at least one lecture everyone has seen..I can guarantee you…
Yes.. u r right
no, my younger brother dont know about pw :P
@@aadityavilassharma1802☠️☠️💀
No many South Indians don't not all still many even I used to go for tutorialspot but this topic wasn't there that's why I came her
Ur explanation is just ...say in world's simplest language that one can ever expect.
SIR I REALLY LOVE WATCHING UR VIDEOS ..... LITERALLY LOVING PHYSICS...... WHICH ONCE WAS MY PHOBIA...
Sir I think the last question of the class has multiple answers,as both option b ans d are correct . Since 100/(220)^2=60/(220)^2+40/(220)^2. Please like the comment if correct 🙏😊
Yeah same
So what's solution
Absolutely same
yeah
Yes vro
# kon kon hai vo jo 🙏sir ka lecture. Normal speed me nahi dekhte😅😁😁
👇👇👇
Like it
Sir the Answer for the last question has two options both "b" and "d"
who ever has got the same hit like👇👇
Yeah you are right bro...
yeah i was searching for it
No , its only D .
Its Single Option Correct
and
1/r100 = 1/484
1/r40 + 1/r60 will give some other value .. i tried ..
bro can u plzzz explain me how (b) option is correct
d is the correct option
Today in my school , Fans are rotating slowly . Obviously the voltage is low , but I don't the concept yet , but after coming from school , watched this lecture and at 34:33 got my answer. Thank you sir for Making this precious lecture.
Matlab kuchh bhi????
58:50 in this last question why can't b)option be also the answer?
How: with the values of P given, we can say 100=60 +40
Then P1=P2+ P3 ( by cancelling common V^2 ) we get
1/R100= 1/R60+1/R40
i think its multi correct , i also got the same ans
Yep had also same dobt
No it won’t be equal
Yes it is correct
@@supriya477 it is equal check again
At 49:00 the 3rd bulb 💡 will fuse because the supplied voltage is more than rated voltage⚡️
Yes Meri doubt bhi yahi hain....
4 years and still the most op lectures and making us entertain as well❤❤❤
Is there anyone after hearing class also dont feel like studied but when question realated to this had been asked we could answer.....
Koi sence hai ?
@@MRX-ys7rr ?
OMG such a great explanation ab ptaa chala school ke teacher to time pass karte the 😂😂🤣🤣
24:46 In the 2ohm resistor , current is 3A and potential is 12V , therefore by the formula E=VIT, we get E=12×3×3=108J
@@el9651 just memorized it lol 😂
By v^2t/R answer is 216 joules, I have checked mny times. Why is it different?
last one is multiple correct
Both b) & d) r correct
I was searching for this only...... Thnks
yhi sochrela tha main
yup
No bro, you need to use current in the upper circuit cause they are in series. So W1=i^2 R1 and W2=i^2R2 and replace .i with V/(R1+R2) AND FOR W3= V^2/R3. HOPE IT HELPS 😃
@@RXK51 raelly?
Sir maine pehli baar apse padha hai kyuki mujhe ye topic smjh nhi aa rha tha and I must say ki log jo aapki itni tarif karte hai you totally deserve it all !! Sab kuch conceptual clear kardiya thankyou so much ❤️✨
Dedicated to physics wallah-
Dekh Dekh Dekh
Tu kr na time paas
Dekh vrna ho jaayega
Future bavaal
Dekh dekh dekh
Tu kr na time paas
Dekh vrna ho jaayega
Tu behaal!!!!
Toh kya Karein yaar!!!
Toh toh toh !!!
Physicswllah aaya
Tu book toh nikaal!!
Concept hoga clear..
Hilega ek ek sawaal
Arai physics wallah aaya
Toh book toh nikaal
Ab toh ho jaayega..
PC mein Kamaal..
Dhanyawad!
Behno and bhaiyo 🙏
👍👍👍nice
@@princessaaliya4696 thnx 😁
Boht faltu , aaathoo🤮
@@shreyashpradhan3577 ohh Arora Sahab aap?
Nice
I have a request to all of u GUys please like the video .give uR valuable Feedback.....
58:50 sir chose option d which is correct but if you check the values,you'll find that 1/R100=1/R60+1/R40.
So both answers are correct right?
Correct me if I'm wrong.
I was also thinking the same thing...
I m also having this issue
I also got the same thing
Yeah option b and d both are ✔✔correct
सर जी आप दिल से पढ़ाते हो तथा हम बच्चों के लिए कितनी मेहनत करते हो।आपके चरणों मे कोटी कोटी नमन।🙏🙏
That damn innocence while entering the class,soft spoken.. Whahh,,LOVE ❤U ALAKH SIR. SOO sweet of u🥰
52:25 if a bulb gets more voltage than rated it will get fused..hence, it won't glow!!
Yes !! I was also thinking the same
Power in bulb case starts at 32:25
Sir ap ki e lecture dek ke maine engineer ban gaya..... Tnks u sir ...🇮🇳🇮🇳
Sir I could not understand Physics till 9th ending but when I started watching your lectures I used to love Physics. Thank you So much Sir. You are the best teacher in the WhOLE WORLD.
Bhai 10th tak every subject was ENGLISH except Assamese and Hindi
I am from lakshya jee 2024 .yet I face difficulty with rajwant sir so I am coming here only for this Legand. Your old lectures are diamond .i score 40/40 in class exam because of only this Legand.
Thanks so much
Jai Physics Wallah💪💪💪💪💪
Die hard fan of Physics Wallah
Sir,
In the last question, there is multiple correct options 'b' and 'd'.
Am I right, Sir?
@Dala Bhai true
Yes I was also thinking the same
Yes 😊
its an IIT question ....ofc multiple option ..tho correct ans my friend
Yes correct
Lucky to have teacher like u sir 🙏🙏🙏🙏🙏🙂
😂😂ua-cam.com/video/7HeKC4lVM5M/v-deo.html
Hy
Sir i have seen all the lectures of your whole physics and chemistry and my journey is completed with jee 2022
did you qualify?
Bhai mere comment me hi jawab hai
@@sarthakghadge6657 oh right congrats bhai!!
Hloo
@@slimeadda111 bolo
hamesa ki tarah ye bhi------------😱as expected from alakh sir!!!! 🙏👌👌👌
👍👍👍👍👍👍👌👌👌
51:11 When supplied voltage(250v) is more than operating voltage (220v) , the bulb of 60w shouldn’t get fused??? 51:11
Lagtha hai sir ne stabilizer laga hoga😂😂😂😂
sir ur way of teaching is awsome.🙏🙏🙏🙏
Tuition teachers takes a lot of fee and don't even provide quality education..
They just provide notes..
They are not focussed on that we are understanding the concept or not...
You are very amazing sir..
Providing free of cost.. Such a high quality education....
😊😊❣️❣️
Kuch log toh lakho m paise leke v itna achese nhi padhate....or sir ne toh free m hi itne ache or sache mn se padhate aye h....
Great sympathy for resistance by sir 😂
No one can beat you sir in teaching every subject thank you for being with us ❤❤
Sir i love you, I'll definitely meet you someday...i never understood these concepts in such manner..like they go deep into my hippocampus..bas gye hai ekdum... ❤❤
Sir you are right agar ham khud se notes banaye to jaada best rhega,
who is watching this video until there school online classes😆😆😆😅
Me
Me bro
Me
School ke teachers ne physics ko zindagi ka villain bana diya tha and aapne physics ko hlwa bana diya
Sir i think last question should have two answers (b) and (d).But Option (b) will be incorrect if it was mentioned that these bulbs are kept at room temperature and their resistances depends on temperature. Bcoz resistance of each bulb will change differently with change in temp.
Yes!!!
Pandey sir: teaching with fun
We: learning with doing fun
From lakshya jee🙂
Sir ur teaching way is just similar as NV sir and i also explain similarity
1. Feel word
2. Unlike sound creation during teaching
3.repeating again and again aaya ki nhi 2
4. Crying during teaching
But then also i like both of u
Yes..he is somewhat similar to my organic chem sir...quite funny 😝but awesome..
Thanks sir for giving us feel of physics...☺️☺️
In the last question , can't the answer be option B , try out by putting values , and please let me know . 👍👍
yes bro. it is also coming out to be correct
100/(220)^2= 100/(220)^2
if you understand then plz let me know tooo
i got b and d too
it must be multi correct one. both r correct options
@@muskansharma4833 jee ka h so both r correct ..👍
B and d both
2:21 sir urs "gin gin gin" motion of current reminded me of nagin gin gin gin 😄😄😂 I. Thought u may sing
Sir in the last question 58:00 option B should also be correct..
Avik Dey yup I also think so
Yes Avik, both b and c options are correct 😎
Ha Multi correct tha..
@@tiyas1915 no it was single correct
@@nishant_mittal sahi se solve kar.... Kahi galti hoga tera
waise we can do IIT 2002 question 56:00 by using logic
bulbs in parallel have equal voltage so III > (I,II)
but in series bulb with lower power hase more brightness so II > I
Hence III > II > I :)
Thanks a lot sir for your great work.
Jay Swaminarayan
Nam me pw ka symbol kaise lagaya?
@꧁༒DR DALA ꧁༒ usse kya hota hai?
Thank you sir aapki wjh se ye ch mujhe acche se clear hogya
Power Equations:
P = i²R
P = iV
P = V²/R
Energy Equations:
Energy = V²t/R (if i = constant)
Energy = iVt (if i = constant)
Energy = i²Rt (if i = constant)
Energy Equations:
Energy = (integration)iVdt
Energy = (integration)V²/R × dt
Energy = (integration)i²Rdt
At 30:40 1st and 2 nd should be equal because of wheatstone bridge
Yes bro same doubt 😢
Fight with them till last hope
Dont loose hopesss .keep onnn
Tryingg
Fail fail fail and again wake up
But never loose uR HOPE
sir 31:30 in that question all equivalent resistance should be same (1)wheatstone bridge (2)Is also wheatstone bridge (3)as the common resistance is not considered, it is also same. So the ans should be p1 = p2 = p3
But 2 wale ka different hoga Baki 1 and 3 ka same hoga😑phir se dekho.
@@AbhaySingh-cj2yf you are correct
Sir please chemistry ki organic kra do. Kon kon chata h👇
Organic chemistry sir ke channel me already uploaded hai...
0:19 wow❤🎉
Sir u have done a mistake .
At 40:46 ,for calculating resistance of each bulb u have taken p.d. of each bulb as 220 which is wrong because pd of whole combination is 220 and not across each bulb
yep,but how it is done in correct manner now?
yeah! this is the same doubt i have..
No this is correct.
Because the power rating is done on the basis of the Indian system that is 220V and the resistance is decided on the basis of that only.
@@sushilabeniwal4706oh Thank you so much
17:10
26:40
48:00
(Marked for personal use)
My name is W Pandey aur yeh h hamara Aapka pyaara SA channel physics wallah
Last ans. Will be B, D both if anyone not watch properly then confirm he/she miss it so check and correct✅ it
U are best teacher ever in my life ..I really meant it sir!😌✨
50:47 me bulb 1 aur bulb 2 to series me connected h to fir voltage same kyo h??
Please reply..
40:22 जैसे Sir ने कहाँ that 220V में से कुछ 100W वाले bulb में जाएगा, कुछ 50W वाले bulb में, और कुछ 25W वाले bulb में. Then while calculating resistance, why potential difference 220V is taken same in all the 3 bulbs, though they are in series ? Please guide me... Thank u
@@rushiikeshjadhav yaa...I too agree on that. Kyuki p=vi hota h aur series me current,i constant hoga to power ko different hone ke liye voltage to alag hone is padega..
@Shruti S. See, there are two types of voltage
(1) Voltage printed on the bulb.
(2) Voltage supplied by the battery.
Since voltage supplied by battery will not be equal in all. So, sir started finding resistance of each bulb i.e R=V^2/P where 'V' is not the voltage supplied by the battery. It is the voltage which is written on the bulb..
@@rushiikeshjadhav we are given power of bulbs with respect to 220 volts system. But bulb s' actual power is different. But, resistence in every case is same (for a particular material and temperature) hence resistence (of first bulb)=(220)^2/100 and so are the second and third bulb. Then we can calculate actual power with the helpnof resistance.
Hope this helps😊😊😊😊
@@rushiikeshjadhav bhai mujhe bhi yahi question sata raha hai
🥺🥺🥺🥺what an amazing lecture❣️🥺
Thank you sir from bottom of my heart ♥ keep me it up. May god bless you 😘