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Lenz's Law - How to find the direction of the induced current 

Physics Ninja
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Physics Ninja shows you how to find the direction of the induced current when you push (pull) a magnet toward (away) from a closed loop. I consider all 4 cases of the problem and illustrate how to find the direction of the induced current for all cases.

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24 мар 2017

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Комментарии : 152   
@hollyifould6925
@hollyifould6925 8 месяцев назад
this is from 6 years ago but is still views this concept from a much more understandable perspective. literally perfect. thanks so much
@milastojkoski6646
@milastojkoski6646 4 года назад
Super helpful!! Nothing has helped me understand Lenz's Law until now, thank you so much
@PhysicsNinja
@PhysicsNinja 4 года назад
You got this Mila!
@sarahholland5980
@sarahholland5980 3 года назад
thank you!! I understood Lenz's in situations where you were changing the field, but situations with magnets were confusing me so much and I couldn't find a guide that went over it in a straightforward way anywhere. you went through multiple situations! thank you!
@stephaniec.2887
@stephaniec.2887 3 года назад
Thank you so much! I have a physics test today and this really helped iron out the wrinkles in my understanding!
@ThatObdurateOne
@ThatObdurateOne Год назад
Was Trying to understand Lenz Law for my exam, could not find anything helpful. But at the exam day, found this video. ThankYou so much!!!
@bilesedinsa1708
@bilesedinsa1708 2 года назад
BEST explanation of right-hand rule. I think you just saved me from my test!
@posoon1829
@posoon1829 Год назад
You are better than my professor.... Thank you Ninja!
@gonpachiro24
@gonpachiro24 3 года назад
Plz mention clockwise and anticlockwise direction
@mrw5258
@mrw5258 3 года назад
Love this vid. This is exactly what I needed for sat subject
@blob4492
@blob4492 10 месяцев назад
spent like 3 hours trying to understand lenz law, and your video just explained it in 11 minutes
@PhysicsNinja
@PhysicsNinja 10 месяцев назад
Thank you!
@alejandromorales1691
@alejandromorales1691 3 года назад
This is the only video that has actually helped me thank you
@Shardus_Blunder
@Shardus_Blunder 2 года назад
Thank you. You explained this so well. I have always had an issue with fully understanding how the magnetic fields interact with one another and how the flux is involved.
@icon-1697
@icon-1697 4 года назад
Thank you so much for the very well and clear explanation. You helped me out of this slump of feeling like I couldn’t understand it to understanding it much much more. Thank you
@PhysicsNinja
@PhysicsNinja 4 года назад
You got this Kc!
@neildegrassfedbison658
@neildegrassfedbison658 Год назад
I have been struggling with this for sooo long and you explained it really well
@TalooshDaBoss
@TalooshDaBoss Год назад
nice name lol
@ryanrybicki2036
@ryanrybicki2036 2 месяца назад
You cleared up my questions on induced current more than what my physics teacher accomplished in two weeks. Thanks so much, this was a lifesaver!
@sufiahnabihahbintinekkamal3800
@sufiahnabihahbintinekkamal3800 4 года назад
thank you for this, quarantine made me learn from youtube and it really helps!
@shabanasheikh4866
@shabanasheikh4866 5 лет назад
Thank you sir ! Was trying to understand this concept from a long time ! Your video helped me a lot !!
@tmn671
@tmn671 3 года назад
Wow, Incredibly explained sir Thank you, This helped a lot!
@kaziashiqul
@kaziashiqul 9 месяцев назад
excellent demonstration. This is what I have been looking for. Thank you so mucch
@SarrouTube
@SarrouTube 3 года назад
The most nice explanation that I found in youtube
@PhysicsNinja
@PhysicsNinja 3 года назад
Thanks!
@miguelfelix6802
@miguelfelix6802 4 года назад
I really appreciate the video. You explained it better than my teacher.
@eliaz1929
@eliaz1929 Год назад
Just the video I was looking for! Thanks
@user-sy8om1uk4g
@user-sy8om1uk4g 8 месяцев назад
thank you! understand this law much better and clearer now!
@PhysicsNinja
@PhysicsNinja 8 месяцев назад
Excellent!
@freedomfirst4045
@freedomfirst4045 Год назад
Am just seeing this five yearsnlater i really appreciate it. Finally i understand this thing 💪🏼
@angelinaparida3150
@angelinaparida3150 3 года назад
Amazing...I understood the concept really well..
@tobydwyer5602
@tobydwyer5602 4 года назад
Very clear and well explained, thank you.
@michaellam4082
@michaellam4082 5 лет назад
very very very good conceptual information! Saving me on building my own tesla coil!!!
@EROC88
@EROC88 3 года назад
The goat of physics
@annabellefaurot4683
@annabellefaurot4683 4 года назад
Thank you so much! This video really cleared everything up for me. My teacher taught it a bit differently but I’m sticking to your method👍.
@bajrabbajracharya1354
@bajrabbajracharya1354 3 года назад
Thank you for this video ...... It was really hard to find video which explained the concept in short amount of time ........ To which this video has done its job .
@PhysicsNinja
@PhysicsNinja 3 года назад
Thank you!
@geetarao1684
@geetarao1684 4 года назад
Thank you. Explained very well
@JuanMartinez-hw3tf
@JuanMartinez-hw3tf 6 лет назад
Thank you, I finally get it.
@KursadKocak
@KursadKocak 4 месяца назад
Thank you for explaining it so clearly!
@111356580
@111356580 2 года назад
OMG dude, you save my physic course
@jasonhall947
@jasonhall947 5 лет назад
Excellent video! Subscribed!
@stemhumor573
@stemhumor573 Год назад
Thank You so much, this was super helpful
@wintermelon8268
@wintermelon8268 2 месяца назад
Thank you, amazing video!
@PhysicsNinja
@PhysicsNinja 2 месяца назад
Glad you liked it!
@Ting003
@Ting003 3 года назад
thank you! this is really helpful!
@karangupta4978
@karangupta4978 5 лет назад
I was trying to solve these using the Fleming's right hand rule but found out that the direction of motion was the same as direction of the field so the induced current should be zero, but i want to know why the right hand rule doesn't work here.
@sophiesoso7
@sophiesoso7 4 года назад
thank you so much!!!! this makes so much sense
@jonathana9236
@jonathana9236 4 года назад
Thanks for the explanation it was helpful.
@meh7952
@meh7952 4 года назад
Thank you. Very helpful video.
@shresthgaurav1846
@shresthgaurav1846 2 года назад
Fully cleared my concept... ☺😊
@anirudhhar8877
@anirudhhar8877 4 года назад
Thanks mate.. Really helpful ❤️👍
@tuurbert876
@tuurbert876 Год назад
Great explanation!!
@yash1326
@yash1326 3 года назад
Tq sir very helpful... From india🇮🇳🇮🇳
@veenasahane8780
@veenasahane8780 3 года назад
Thank you very much..it helped a lot!
@user-cz4qy9yg6q
@user-cz4qy9yg6q 9 месяцев назад
Beautiful explanation and visualization, generally here it is not very easy to visualize but finally I have understood. Thank you, sir. Kindly be more active w/ yr content.
@PhysicsNinja
@PhysicsNinja 9 месяцев назад
You're very welcome!
@holly.ifould02
@holly.ifould02 Год назад
Omg this has helped me so much thank you
@PhysicsNinja
@PhysicsNinja Год назад
I'm so glad!
@divyabharathi8556
@divyabharathi8556 3 года назад
Very clear explanation.Tq 🙏
@pitabasbastya3478
@pitabasbastya3478 6 лет назад
Thanx sir it helps me a lot ,to clear my concept
@PhysicsNinja
@PhysicsNinja 6 лет назад
Glad i was able to help you. Dr. E.
@Jasonvoobhggg
@Jasonvoobhggg Год назад
Thanks physics ninja!!
@nuton9706
@nuton9706 11 месяцев назад
Great video, I have learned a lot from it
@PhysicsNinja
@PhysicsNinja 11 месяцев назад
Glad it was helpful!
@leej-vq6hl
@leej-vq6hl 3 года назад
thank you so much for the video better than any lecturer in my school really saved my ass before alevels
@mohammedthamer9206
@mohammedthamer9206 3 года назад
the right hand rule doesnt make sense could you help ??
@stefanjovanovic6085
@stefanjovanovic6085 4 года назад
Why does the galvanometer deflect to the right when pushing the north pole inside, since positive potential is on the left so it seems logical to me that it would point to the left? Btw. Great video.
@wenhuang3567
@wenhuang3567 2 года назад
Hi, I have a question. if the switch JUST got turned off on the solenoid, what would magnetic field on the solenoid be? it is going to be reduced, but still in the same direction I guess? (not looking at the inducing B yet. just the orignal B).
@26e32
@26e32 Год назад
Just wondering what does it mean by B is the field lines crossing initially
@Sagal-br4og
@Sagal-br4og Месяц назад
Thanks physics ninja❤️❤️❤️❤️
@bmzaron713
@bmzaron713 2 года назад
It would make it a lot lot simpler if you labeled the ends of the inductor N and S for each case but this was still really good.. Keeping the magnetic flux constant via generating a matching opposing magnetic field is interesting (I guess this would be obeying Newton's third law of motion - I just looked this up)
@nazzabazza842
@nazzabazza842 2 года назад
YOU BLOODY LEGEND!!
@manavawesome7060
@manavawesome7060 5 лет назад
Best video ....👍🏻👍🏻👍🏻
@inayatullahkhan7662
@inayatullahkhan7662 Год назад
I have a question sir. Suppose we have a frictionless system. Magnet and coil are arranged along the x-axis. If we move the magnet towards the coil in such a way that the north pole of the magnet faces the coil, the coil will oppose its motion and will generate the north pole. It will repel magnet. Then the magnet will move away. Then coil will oppose that too. So the magnet will move towards the coil and so on. We gave an initial push and the magnet started moving on its own. If magnet does so it will become self sustaining and will oppose the law of conservation of energy. So will the magnet do this or not and why? Please answer. My knowledge is not able to answer it. I love your lectures by the way. 🥰🥰🥰
@harsshawardan9581
@harsshawardan9581 3 года назад
Thanks helped a lot
@lindiwesokuwe3061
@lindiwesokuwe3061 2 года назад
Thank you! ❤❤
@guillaume6373
@guillaume6373 2 года назад
Great video, thx :))
@samsuddinansari8247
@samsuddinansari8247 3 года назад
Thanks mam this really helps buddy
@patrick-johnvillanueva-mal9480
@patrick-johnvillanueva-mal9480 3 года назад
What would happen if the magnet was perpendicular to the axis of the coil and was moving from point A to point B of the side of the coil?
@namehere2910
@namehere2910 Год назад
Thank you
@GhostAGaz
@GhostAGaz 2 года назад
Does anything change if the magnet comes from the other side?
@Editfact324
@Editfact324 2 года назад
Sir please use the mic the sound will be better 😊 because explanation is crystal clear
@guutaa1
@guutaa1 Год назад
😂❤😂❤ I understood lenz's law after was confused for many times
@misdreavus2760
@misdreavus2760 3 года назад
THANK YOU!
@navyanair3222
@navyanair3222 Год назад
thanks so much
@jourdanhamme4065
@jourdanhamme4065 3 года назад
Thank you :)
@user-td5ch2jl2w
@user-td5ch2jl2w 2 года назад
Isn't induced field supposed to be opposite when the distance between the magnet and coils get far from each other since the flux is increasing? This seems like opposite from what I have learned.
@wanjingzoeyyao4716
@wanjingzoeyyao4716 3 года назад
this is so helpful
@PhysicsNinja
@PhysicsNinja 3 года назад
Thanks!
@coggytug4875
@coggytug4875 2 года назад
Jesus christ this is amazing.
@helintaha1849
@helintaha1849 2 года назад
Thank you!!!!!
@rethabilemofokeng1698
@rethabilemofokeng1698 Год назад
THANKS
@turabulhaq9941
@turabulhaq9941 4 года назад
Thanks
@ItXoGirl
@ItXoGirl 4 года назад
Thanks!!
@sassinator7462
@sassinator7462 4 года назад
My question is how do you know which way the current is going around the coil in the first place? is it arbitrary?
@lukakusekovic9185
@lukakusekovic9185 3 года назад
In the first place there's no current going through the coil.
@ishtiaqhussain2137
@ishtiaqhussain2137 3 года назад
@@lukakusekovic9185 The current is induced in the coil due to change of magnetic flux by the movement of bar magnet
@mariawiik1098
@mariawiik1098 Год назад
The video was great and it was incredibly helpful, thank you so much!
@JT-gv8uj
@JT-gv8uj 4 года назад
hello can anyone help me understand how to find the direction of delta B please
@mainakmukherjee3444
@mainakmukherjee3444 2 года назад
Hi, I just want to know what will be the positive terminal of the coil?? The N side or S side??, When The North Pole is coming towards the coil
@Ce3nt307
@Ce3nt307 3 года назад
Hello, I'm stuck with using my right hand because from what I got the force and magnetic field lines are parallel, and I'm sure I'm doing something wrong
@qirat.652
@qirat.652 3 года назад
There’s two different directions of current for the same direction of magnetic fields when using right hand rule, I don’t get it?
@PhysicsNinja
@PhysicsNinja 3 года назад
The direction of the field is not important. It's the direction of the change of the magnetic field that is important.
@hiwaabdulhaq3465
@hiwaabdulhaq3465 3 года назад
One question sir , how did you determine the direction of field B ?
@narindermultani2874
@narindermultani2874 3 года назад
This is the basic problem he just discussed without applying the rules except saying in words written in books.
@deyardeyar8163
@deyardeyar8163 3 года назад
god bless u sir,
@lks9988
@lks9988 3 года назад
Thanks a lot
@kunalpat9598
@kunalpat9598 4 года назад
Amazing
@PhysicsNinja
@PhysicsNinja 4 года назад
Thanks!
@ryanmarshall4741
@ryanmarshall4741 5 лет назад
Why are the magnetic lines coming OUT OF N and going into S? Also, what I want to know is if you had a nail running through the coil and you applied a current to that coil, can you figure out which direction the nail would go? I would think yes, but I also get confused as the right hand rule has you placing your thumb in the direction of CONVENTIONAL current flow, from positive to negative, even though electrons ACTUALLY flow from negative to positive. So this confuses the heck out of me.
@PhysicsNinja
@PhysicsNinja 5 лет назад
There are several conventions in physics that you have to learn. It's confusing at first but stick with and you'll remember them. 1) Magnetic field lines point away from N and towards S 2) For currents, you're right that it's the electrons that move in a conductor but we say that a positive current flows in the opposite direction. 3) Electric field lines point away from positive charges and toward negative charges. For the nail question you have to figure out the direction of the induced current in the nail. Then you'll the field produced by the coil and the field produced by the induced current in the nail. If the fields are in opposite directions it's like having 2 north poles facing each other.
@ryanmarshall4741
@ryanmarshall4741 5 лет назад
@@PhysicsNinja Awesome. Thanks for response. I got it. Had to re-watch video a couple of times but I understand how to solve for the direction of induced current now. Ok, hopefully last question: to apply that to reality, are we saying the actual flow of electrons will actually be in the opposite direction of the blue arrow I-induced you labeled? If you would be so kind to possibly converse more offline? Please contact me: ryanmarshall13@outlook.com Thanks in advance.
@studycorner1875
@studycorner1875 3 года назад
@@ryanmarshall4741 if north pole of magnet is moved towards the coil then according to lenzes law the direction of induced current will be anticlockwise and if south pole is moved towards coil the direction of induced current will be clockwise .Am I right?? Now u tell me that if north pole of magnet is moved away and then south pole is moved away from coil respectively so, what will be induced current direction??
@avp7549
@avp7549 4 года назад
thanks a loooot !
@hayleycantolino5262
@hayleycantolino5262 4 года назад
how did you know to draw I going downward in the first example?
@PhysicsNinja
@PhysicsNinja 4 года назад
Hmmm I’m not sure I understand your question. For the coil I just picked one direction to wrap the wire around in a coil. It’s completely arbitrary.
@Alex-ud1ng
@Alex-ud1ng 4 года назад
thanks
@tariqpeters4054
@tariqpeters4054 4 года назад
Is the magnetic field within the coil uniform?
@PhysicsNinja
@PhysicsNinja 4 года назад
Doesn’t need to be, but it makes calculations a hell of a lot easier.
@chloefong3031
@chloefong3031 5 месяцев назад
THANK YOU BRUH
@harshraj7675
@harshraj7675 3 года назад
Really helpful video 👍👍
@OmarAbo-Basit
@OmarAbo-Basit 3 года назад
Very well
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