Flemmings right-hand rule confusion: There are two Flemmings hand rule. The left-hand rule and right-hand rule. The left-hand rule is used when an already current carrying wire in a magnetic field experiences a force. This is the case in motors. We pass current through the coil and the force due to field pushes and turns the coil. However in generators, we turn the coil and as a result, electric current is produced. To figure out the direction of this current, we use the right-hand rule. Hopefully, this clears the confusion of why we use left-hand rule for Motors and right-hand rule for generators.
@Science done right Imagine being Faraday, pacing, staying up all night, scribbling notes on a pad kept on the night stand... 'almost got it, almost, it's right there!'
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I'm having a hard time paying attention in class recently, I got stressed when I couldn't figure out my homework questions. This video cleared up lot of my confusion. I feel more confident in understanding how generators work. Thank you Khan Academy, you've helped me with math and physics many times now.
i have been studying o level physics for a year and i was never able to truly grasp what was going on with the generators. but with this video when tomorrow's the o level physics CIE exam I have finally understood it. tysm khan academy
Thank you so very much Mahesh and your team. It was indeed an excellent explanation with loads of patience and intricate details where children and even adults might get confused.
This man is the best teacher I've ever heard. This was made so crystal clear, my 11yo son could understand it and use it for his science fair project. Thank you, sir.
sir, the explanation and the way you have presented this tutorial are very good for students. learning by visualization is the best method of studies. Students should explain this concept to others which will definitely be useful.
When i was a university student in 1980's without internet only with books / static images, to learn this things it was 100x more dificult to understand these basic concepts then it is today and for sure it took 100x more time than nowadays. Congratulations for the video.
Which software do you use brother? ..... I want to explain concepts like this to my students. Please reply ASAP as they have their board exam next month. Thank you!
I learned this theory 60 years ago; L.H. rule for motors, R.H. rule for generators. As I didn't go on to work in the field I didn't ever fully get to grips with it, and have puzzled with my memory of it over the years. As I see it now, even a D.C. generator generates in A.C., the commutator acting to correct the A.C. to D.C.! Beautifully explained, thank you.
Hello!! This is an amazing video. Really helpful and comprehensive! I would like to ask you how do the rotating wires connect to the rings? Are there any smaller circuits inside the rings?
I don't know if you will see this comment but I've seen many videos with exceptional animation skills and great explanation techniques but this is the only video that has made me understand the whole concept of the difference between ac and dc motor and how it all connects to the concept of the fleming's left hand and right hand rule. This is the video I needed, the one I was searching for, for many days. Thank you so much. I was mostly confused on why there was a gap in the split ring commutators and this video fulfilled that doubt (thanks to the pausing you did to show the current reversing direction)
VERY well done! I'm an old dude who continues to be interested in power generation and distribution, so am always looking at content on RU-vid. Though I've known this principle for decades, I don't recall it ever being done so clearly. Of course, computers and software make this possible, but you have used them quite skillfully.
This an awesome video that matches a practical lesson with in the class! This can be understood by the little ones, this academy deserves appreciation! You helped alot of people! In you tube, there are lessons that are more important than the class lessons!! Thank you!
BEST EXPLANATION EVER!!! I had so much trouble getting my head around the flow of d.c and a.c in the armature. Its do with a.c having slip rings and d.c have split rings. Now I get it, thanks
This video is far way better than classrooms. I could not understand it even after 3 classes but now everything is in my brain. Thank you, Khan Academy
I never understood the basic concept of the power generators in the college as well as I just with this video. I think they were focused mostly on the math and forgot about showing this way the basics, but hey, the basics are vital!
This is hands down the best explanation along with animation for this topic. This chapter was really confusing for my understanding earlier but it is literally a piece of cake now.
This is a good video explaining the basic principle of a generator. But at 0:54, moving a conductor through a magnetic field, doesn't induce current in it, the magnetic field induces electromotive force, also known as Voltage. If the circuit is closed, only then the "induced current" appears.
I don't usually comment on videos, but this video made me comment! Your teaching skills are top notch! The animation was perfect too!! Thank you so muchhh
I’ve been struggling with this chapter for the past few months and I watched a TON of vids in the hopes that my brain would process something, but this one lit the lamp. Ty soo muchhh 😭
Good one! Not learned this in my b.tech.my suggestion to everyone is firstly you must need strong basics.when you missed out the basics your entire b.tech goes down .You are unable to understand concepts.
Your Movement of the coil at 6:04 is wrong it shud move anti-clockwise and you're going by Fleming's right-hand rule don't we have to use left-hand rule?
Sir really impressed by the way you are teaching. Watched Hundreds Of Videos but still had some doubts but now they are cleared thanks to your explanation.
Man. Best video ever. I have adhd and this is amazing. I wish I wasn't broke I would sin merely donate at least 50$. I get a check soon. Got venmo!!!??????
There are two rules. The left hand rule is used to calculate the direction in which magnetic field pushes AN already current carrying wire. In our generator the coil didn't carry any current to begin with, so the magnetic field is NOT PUSHING THE COIL. (This would be useful in motors) The second rule the right hand rule gives the direction of the current that is produced when YOU PUSH a wire in a magnetic field. That's what is happening here, and so we use the right hand rule.
Hi sir, great video of info. Have a clarification. should not the blue wire move downwards (anticlockwise rotation), as the conventional current (from + to -) is passed via N pole.
270 toward 90 degrees Current entering pink by the right hand rule and exiting blue From 90 toward 270 Now current entering from blue and exiting from pink by the right hand rule. 270 to 90 degrees the current alternate clockwise and counterclockwise in each cycle.
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