Now I love science it's interesting when you are speaking each word feels like the console of God so smooth and so interesting thanks for making my life interesting through this teaching
Sir Please Solve My Doubt - Sir In This Arrangement We Can Clearly See That There Is No Change In Flux While Rod Is Rotating , But There Is An Induce EMF Only Because Of Motion Of Rod (Not Because Of Change In Flux) Is This Violation Of Faraday Law ?
You are right about EMF induced without a changing flux. But Faraday never said you couldn't induce Emf without changing flux! All he said was changing flux would induce an EMF.
Faraday’s law is very general and any change in magnetic flux, whether due to a change in magnetic field or, a change in area, produces an emf equal to the rate of change of flux. In fact, both may be present simultaneously, as when you drag a metal bar along metal rails with one end of the rails bridged by a resistor and there is a uniform magnetic field in the area between the rails and bar and resistor. Assume, the magnitude of the uniform magnetic field is increasing. The flux is BA, where B is the magnetic field and A the area enclosing it, and the rate of change of the flux is due in part to the change in the magnetic field, and in part to the change in the area enclosed by the changing path. The resistor will heat up! The equation of the rate of change of flux....without the details of the derivation are = (dB/dt) A + BLv (Change of B, fixed path) (Change of path) The calculation is a bit mysterious. Physically, where did the emf represented by BLv come from if it is not associated with a changing magnetic field? Befire we provide an answer, it would be instructive to understand Current, the conduction process and Voltage at the fundamental level. Electrostatics and circuits belong to one science not two as in the following two videos: i. th-cam.com/video/TTtt28b1dYo/w-d-xo.html and ii. th-cam.com/video/8BQM_xw2Rfo/w-d-xo.html Now, returning to the experiment of the moving bar on rails, we see that we have a conducting metal bar and we are moving it. Note carefully that we are moving the jumpy energetic conduction band electrons in it as well. As a result of the magnetic force (due to the presence of the uniform magnetic field), the free electron sea shifted, and the bar polarized and a Coulomb electric field develops and that is how an induced emf is produced. It is not possible in this post to discuss in more detail the process of polarization and the consequent production of an emf. The last frame References in video #1 lists textbooks 3 and 4 which discuss these topics in more detail using a unified approach and provide an intuitive understanding of the generation of an emf in generators and motors.
In second part of question where disk is discussed, How can multiple rods can be joined to form a disk.I think it will never form a disk rather it will form a rectangle.
how did you decide the direction of emf , how did you predicted tha the centre would be at high potential and the ends of the rod be at lower potential?? how would this direction vary with if rod was rotaating in other direction or magnetic field was upward instead of downward??,, NGL , this video is not helpinng :(
huge efforts are being put by him, RESPECT FOR THIS GUY.
Thank you for this. I haven't had anyone explain it to me this clearly. Great work.
Really appreciate the hard effort you given for this. This is much better thought than at class
Now I love science it's interesting when you are speaking each word feels like the console of God so smooth and so interesting thanks for making my life interesting through this teaching
U truly deserve respect🙏 ...keep going sir.
Ohhhoooo
13mins n u r ready to solve questions...thanx man❤️
Very very very good teacher❤❤❤❤❤
best teacher on the subject period
Sir please make a playlist for current electricity chapter based on the videos u have posted
I wish my phy teacher was this good.
Very intresting to learn😎 from you
Sir Please Solve My Doubt -
Sir In This Arrangement We Can Clearly See That There Is No Change In Flux While Rod Is Rotating , But There Is An Induce EMF Only Because Of Motion Of Rod (Not Because Of Change In Flux)
Is This Violation Of Faraday Law ?
No .Faraday law is for coil .
You are right about EMF induced without a changing flux. But Faraday never said you couldn't induce Emf without changing flux! All he said was changing flux would induce an EMF.
Dood this doubt was killing me thnx for answering!!!
I had the same doubt after watching video and then I was searching for any comment if anyone had asked this...Thanks !! its clear now😮
@@KhanAcademyIndiaEnglish thanks bro that doubt was killing me for years now its clear
Cleared my concepts! Thank you so so much.
Wow so good explanation❤😊
Omg amazing..this chapter is going on in my class..plz complete this as soon as you can with same effort..I really love it way..thank u so much
Khan academy always goes hard🤝
Sir please Hindi mai bhi video banaya karo
Lots of love
Sir please update the playlist
He is mahesh sir❤ float head physics 😊😊😊
God bless you ! What a wonderful video
Nice explanation Sir Thank you😊
thank you for the explanation
Thank you very much ram bhaiya
Thanks bro. You cleared my doubt😊👍
U are great concept clearing mastar
Thanks ☺️
Exactly I had the same doubt of adding all the batteries.. finally I got the answer😢
Good explanation
thank you kind sir
Faraday’s law is very general and any change in magnetic flux, whether due to a change in magnetic field or, a change in area, produces an emf equal to the rate of change of flux.
In fact, both may be present simultaneously, as when you drag a metal bar along metal rails with one end of the rails bridged by a resistor and there is a uniform magnetic field in the area between the rails and bar and resistor. Assume, the magnitude of the uniform magnetic field is increasing.
The flux is BA, where B is the magnetic field and A the area enclosing it, and the rate of change of the flux is due in part to the change in the magnetic field, and in part to the change in the area enclosed by the changing path.
The resistor will heat up!
The equation of the rate of change of flux....without the details of the derivation are
= (dB/dt) A + BLv (Change of B, fixed path) (Change of path)
The calculation is a bit mysterious. Physically, where did the emf represented by BLv come from if it is not associated with a changing magnetic field?
Befire we provide an answer, it would be instructive to understand Current, the conduction process and Voltage at the fundamental level.
Electrostatics and circuits belong to one science not two as in the following two videos:
i. th-cam.com/video/TTtt28b1dYo/w-d-xo.html and
ii. th-cam.com/video/8BQM_xw2Rfo/w-d-xo.html
Now, returning to the experiment of the moving bar on rails, we see that we have a conducting metal bar and we are moving it. Note carefully that we are moving the jumpy energetic conduction band electrons in it as well.
As a result of the magnetic force (due to the presence of the uniform magnetic field), the free electron sea shifted, and the bar polarized and a Coulomb electric field develops and that is how an induced emf is produced.
It is not possible in this post to discuss in more detail the process of polarization and the consequent production of an emf.
The last frame References in video #1 lists textbooks 3 and 4 which discuss these topics in more detail using a unified approach and provide an intuitive understanding of the generation of an emf in generators and motors.
far better than my school
Sir plss give the link of motional emf video
This is motional emf
Thank you sir🙏
Hats off to you bro
Amazing
And where's the previous video??
Is there a way we can send our doubts to you guys ? As image or something
really Good 👍👍👍👍👍👍👍👍👍👍👍👍
Great 👍 👌
thank you
U r really a legendary 🐐 goat
Thank u soo much
Sir which app you're using for this video?
Love your lectures ❤️
Lots of love
Can't we say that flux Is changing because of change in area vector direction while rotating?
we haven't talked about motional emf in the previous videos sir
Nice
sir please make a video on cyclotron
It’s not in our 12th syllabus
@@tasneem6427 only 2020 batch is exempted
@@tasneem6427 still its pretty cool and important concept
try Readin ncert
@@whytho2030 Yes you are right
It does not seem to suit the law of conservation, the kinetic energy not going to decrease when the emf is induced.
In second part of question where disk is discussed, How can multiple rods can be joined to form a disk.I think it will never form a disk rather it will form a rectangle.
Wow, great video :))
How is flux changing in disc
Why did you choose magnetic field into the plane....????
For better explanation of motion
Best 👍🤣🤣🤣👍🤣👍👍😊👍🤣👍🤣🤣👍😊
💗💗
video starts at 0.01
how did you decide the direction of emf , how did you predicted tha the centre would be at high potential and the ends of the rod be at lower potential?? how would this direction vary with if rod was rotaating in other direction or magnetic field was upward instead of downward??,, NGL , this video is not helpinng :(
Sir how omega is constant 🙂
Because rod is moving with constant velocity
@@93katwal Thanks a lot bro❤️
Why English accent??
it's difficult for you to appreciate people no? hope you get better in life❤
Neither I am depreciating,just asked a question you should Google the meanings of the words before you use it. Hope you get better in life ❤️🙌
Why are forcefully trying to speak western when it sounds nothing like that