Incredible explanation. I always assumed all E electric fields were of the electrostatic variety, which lead to confusion when I tried to understand voltage generated from changing magnetic flux. Now realizing that there are essentially two forms of electric fields has completed my understanding...thank you so much!
Hi, thanks for this. Couple of questions: In the formula for motional EMF, the integral of (v cross B.dl), can you explain why this formula can't be applied to get the EMF when v=0 (and in so doing giving any EMF in the non-motional case of changing flux) Also, can you say whether the field due to the motional EMF is also non-conservative, or can we even talk about whether motional EMF has an associated field. Lastly, I understand the mechanism behind motional EMF (Lorentz force on moving charge leading to a potential). but what, if any, is the mechanism underlying induced (non-motional) EMF due to changing B field in a fixed loop. Or is it something we take on faith. Thanks.
Professor, so, can I conclude that when the changing magnetic flux is not due to motion, there won't be any induced electric field? or is there always an induced electric field whether the changing magnetic flux is due to motion, rotation, changing area, changing the magnetic field strength etc.?
What happens if there is no wire loop? Imagine if we have a aqueous solution with electrolytes and subject that solution to a changing magnetic field. The electrolytes should flow according to any electric field, but there is no defined loop that they have to follow. So does the magnetic field only induce an electric field if there is a wire? That would seem strange. What is so special about a wire? An aqueous electrolyte solution is also a conductor so shouldn't this work with the solution? But if the magnetic field does induce an electric field, where would it be and how would the electrolytes flow given that any loop or circuit is arbitrary? If anyone knows please enlighten me.
1- Electric field also be create if there is not loop .i think when electrolyte use then also electric field create and and then +ve ion of electrolyte repel and -ve ion attract to the electric field
MrAhmed231 using right hand rule when the magnetic flux is increasing according to this middle finger points in direction of electric current ,index finger in the direction of the magnetic field .Likewise left hand rule us used when the flux is decreasing
Normally u can find it bt finding direction of current becouse it will alway in the direction of electric current and according to lenz law we direct our thumb in the direction of opposite to the exist magnetic field the then direction of four finger will give direction of current.thank u
Incredible explanation. I always assumed all E electric fields were of the electrostatic variety, which lead to confusion when I tried to understand voltage generated from changing magnetic flux. Now realizing that there are essentially two forms of electric fields has completed my understanding...thank you so much!
I read my physics textbook several times but i couldn't understand the concept. With this video, it only took me 10 minutes!
Thanks!!
Diego Fung Awesome! :-)
Diego Fung it took me 5 because I sped it up to 2x😁
great explanation! Thanks!
Man this is literally awesome 🎉❤
your videos made physics super easy sir thank you!!
your voice and tonality bring me great suffering
Hi, thanks for this.
Couple of questions:
In the formula for motional EMF, the integral of (v cross B.dl), can you explain why this formula can't be applied to get the EMF when v=0
(and in so doing giving any EMF in the non-motional case of changing flux)
Also, can you say whether the field due to the motional EMF is also non-conservative, or can we even talk about whether motional EMF has an associated field.
Lastly, I understand the mechanism behind motional EMF (Lorentz force on moving charge leading to a potential). but what, if any, is the mechanism underlying induced (non-motional) EMF due to changing B field in a fixed loop. Or is it something we take on faith.
Thanks.
Thanku so much sir! your videos have made physics easier for us.
Great video. Keep up the good work!
Professor, so, can I conclude that when the changing magnetic flux is not due to motion, there won't be any induced electric field? or is there always an induced electric field whether the changing magnetic flux is due to motion, rotation, changing area, changing the magnetic field strength etc.?
As far as I know. It doesn't matter the reason behind the change in magnetic flux. A change always result in an induced electric field.
Son of Oppenheim. You rock man
Great review. You really helped to shake the cobwebs outta my head.
Hey Thomas, great to hear! Thanks !
Legendary explanation
Beautiful
Sir, I have question why moving magnets produce electric field?
Very helpful! Thank you Sir :)
What happens if there is no wire loop? Imagine if we have a aqueous solution with electrolytes and subject that solution to a changing magnetic field. The electrolytes should flow according to any electric field, but there is no defined loop that they have to follow. So does the magnetic field only induce an electric field if there is a wire? That would seem strange. What is so special about a wire? An aqueous electrolyte solution is also a conductor so shouldn't this work with the solution? But if the magnetic field does induce an electric field, where would it be and how would the electrolytes flow given that any loop or circuit is arbitrary?
If anyone knows please enlighten me.
1- Electric field also be create if there is not loop .i think when electrolyte use then also electric field create and and then +ve ion of electrolyte repel and -ve ion attract to the electric field
how can i know the direction of the induced electric field?
MrAhmed231 using right hand rule when the magnetic flux is increasing according to this middle finger points in direction of electric current ,index finger in the direction of the magnetic field .Likewise left hand rule us used when the flux is decreasing
Normally u can find it bt finding direction of current becouse it will alway in the direction of electric current and according to lenz law we direct our thumb in the direction of opposite to the exist magnetic field the then direction of four finger will give direction of current.thank u
Tamilanda💪💪💪💪💪💪💪💪
Va thala va thala amuku dumuku amal dumal tha
Tamila pesu daa
the way you talk gives me a headache.