GCSE Physics - How the Electric Motor Works #80
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- čas přidán 6. 06. 2024
- This video covers:
- How the electric motor uses electricity to create rotational motion
- A quick recap of the motor effect and Fleming's left hand rule
- How a split-ring commutator works
- Where electric motors are used
- How to increase the speed or strength of an electric motor
Exam board specific info:
AQA - Higher tier only
IGCSE Edexcel - Everything is relevant to your course
Edexcel - Higher tier only
OCR 21st Century - Higher tier only
OCR Gateway - Higher tier only
Maths Playlist:
• GCSE Maths (9-1)
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
• Video
your editor needs some good pay
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@@shaheerali7382 most valuable person
You made me understand this topic in just some mins... I was trying to learn it throughout a month. Thankyou so very much. May God Bless you ..
Thank you so much for this video. It's so incredibly helpful and I learned more from this in just 5 minutes than I did from an entire lesson of work.
If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/p2-gcse-aqa-h-t_6.05. The platform’s totally free, and has been built to make learning and revision as easy as possible. The main features are:
- Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown.
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- Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like.
- A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts.
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Amadeus & Tom
Can you please release a video explaining how the motor effect works in Loudspeakers, I still find it very tricky to comprehend
damn lol i was excited to use everything i learnt from these videos on my exams but nvm theyre cancelled smh
i have been trying to learn this for weeks if not months and here you come saving the day :D my lecturer doesn't know how to explain it in like 10 lectures properly and now I get everything about it hahahaha thank you :D
Thank you so much, my teacher literally skimmed over this whole topic in class and this well explained and concise video really helped me understand this portion of the course before friday's exam.
defo one of the hardest concepts to grasp in gcse physics but you explained it so well :)
Ive been stuck trying to wrap my head around it for the last hour but this vid helped a lot lol
thank you so much bro i have my physics IGCSE paper 4 in a week and was struggling with this, this video was really benefitial thank you so much, keep up the good work!!
Hi Cognito, you are amazing! I really understand everything that you teach in Biology, Chemistry, Physics and Maths. Truly a gem! I was wondering whether you are going to do videos on A level content, for example A level Biology, Chemistry and Maths.
Ohh my goshh after watching a lot of videos about d.c generater i finally understood the freaking concpt 😭🥺
Thnx bro. I decided to pay your site a visit and I have to say this helped a lot!
Amazing video.
I can't believe it took just 5 minutes for me to understand a concept that I spent nearly a year struggling to understand it.
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Nice video dude, this really helps 👍🏾
wow thank you so much for making this topic look so easy!
Thank you. It really helps to understand the topic ☺
Thanks alot, it was hard to make sense of this when it was purely in text form in the books
Omg, thanks so much. After watching a few videos in order, I have this satisfying feeling of understanding ❤ subscribed , fully deserved
I seriously owe you a massive thanksgiving! You literally made me understand the whole thing in 5 mins! Thanks man!
Glad we could help Ahnaf! 😊
@@Cognitoedu Can you please release a video explaining how the motor effect works in Loudspeakers, I still find it very tricky to comprehend
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i couldn't be more thankful to you !!! thank you so much for making this video !!! i understood it immediately !
You're very welcome Shernize!
@@Cognitoedu So does this mean then that the circuit attached to the commutator rotates alongside the coil to keep it moving?
@@fungusz_4292 i dont think so, the commutator is the one that makes only the coil rotate every half turn
Just cleared all of my doubts. Thank you all who made this video.
Best video for this topic. Omg for once even free science lessons couldn’t help me 😩
Fr tho :D
Very useful! But can you please upload a video about alternators and dynamos?
i love you man youre saving me right before my tests
Best explain video ever although I had to watch twice to fully understand thank you 😊
Thanks a lot, even my science teacher recommended your channel
Physics paper 2 tmr and this literally saved my life i didn't understand this topic for the past year till i saw this video thankyou soooo much!!❤️
Brilliant❤ so helpful honestly
thank you so much your videos are so amazing and they really helpful
Excellent work
ty, i finally understood the commutator and how it works
OMG TYSM I ACTUALLY UNDERSTAND THIS NOW
Congrats on 100k
I got my test tomorrow and u literally saved my life 😭
So well explained, thank you!
It is really good. If you could increase the audio quality it would be the best
great videos, especially during lockdown!
this was very very helpful thank you
love ur content
Thank you so much.. Clear explanations of coil rotation
Hi, but is it really an “upwards” force if when it gets to the top it begins to move downwards and vice versa?
Thanks for the clear explanation!
Thank so so much
Thank you very much 🙏🏻
This video is great 👍💖
Good video my pal
Thank u this was beautiful
this is the only video that made it make sense!! Thank you so much
Glad it helped!
@@Cognitoedu Can you please release a video explaining how the motor effect works in Loudspeakers, I still find it very tricky to comprehend
So does this mean then that the circuit attached to the commutator rotates alongside the coil to keep it moving?
Excellent videos , all my students find them useful, thanks
So when the current reaches the end of the plot ring commutator does it jump to the other side to prevent switching of terminals
doing the LORDS work my guy !!!!!
JazakAllah
thank you for this
THAKN YOU SO MUCH MY O LEVELS ARE IN 7 MONTHS AND IM STILL NTO SURE HOW THIS WORKS SO THANK YOU
THE ANIMATION WAS REALLY GOOD AND SO WAS THE EXPLANATION
THANKYOOU FOR WATCHING 🙏
@@Cognitoedu Can you please release a video explaining how the motor effect works in Loudspeakers, I still find it very tricky to comprehend
Can you please release a video explaining how the motor effect works in Loudspeakers, I still find it very tricky to comprehend
You guys are life savers 🙏
Great video!
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Which app do you use for editing?
Tysm!
Hello Sir, I just wanted to know if your videos covered absolutely everything you need in the exams. As I love your videos and I understand it really well, but I'm not sure if I have learnt everything just by watching videos.
as a science student idk what i would do without cognito, they deserves more recognition 😭
These videos are so useful keep it up bro 💕💕
Thank you
What does that half turn means? 2:55
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This really is so helpful, thank you
Our teacher showed us this in class hi everyone
This was so helpful, I also love your videos😁
Glad you like them! 😊
@@Cognitoedu Can you please release a video explaining how the motor effect works in Loudspeakers, I still find it very tricky to comprehend
Better than my physic teacher
very helpful, thankyou
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this helped so much thank you!!!!!
Like your videos ,but I set it up at 0.75 speed. It sounds perfect for understanding.
Thanks a lot for making this video. I'm a bit confused though, how does the coil manage to turn 180 degrees without the commutator at 1:31. At 90 degrees, the coil is supposed to stop rotating as the forces are vertical and there is no perpendicular distance from the centre of the coil. Even if there's inertia and the coil rotates beyond vertical, the forces will push the coil back to the vertical position.
Also, every textbook says that the commutator reverses current in the coil at 180 degrees but it's actually at 90 degrees; when the coil is vertical. Please help me out
i think your getting confused with a generator
Ok, as far as I understood, the commutator breaks up the circuit at 90 degrees since it's vertical but moves on due to its motion and reattaches the circuit at 180 degrees. However, that coil at 1:31 is probably just a cell attached to a coil, rendering the breaking up of the circuit impossible, so it goes on to move 180 degrees and stops as the current direction changes.
I don't think we have to know it in that much detail, just that a plot ring commutator is used in a motor, which changes the current every half turn, which means that the coil will rotate in the same direction, allowing a motor to be created. In terms of why it keeps spinning when not touching the terminals, there is momentum which means it stays spinning, and then as soon as it touches the terminal, the current is reversed allowing it to continue spinning the same way.
split ring commutator*
why conventional current and why not the actual one???????????
Holy Fuck thank you so much u don't know how much u helped me
يا ريال تشرح احسن من freescience lesson
so how is this different from an ac, I mean if the current keeps changing, shouldn't it be called an AC motor ?
OK let me tell u something I was having a rough time getting this and in our country final is in 2 days but thanks too u I understood it well
Keep it up Broo
Ah awesome Yadeel, glad we could help out 😊
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Wow u need to slow doen there chief
Just say thanks and move on
I’m in 7th grade I don’t understand anything in the book but ur vids the best
Cognito, I don't understand - what is the purpose of the split ring commutator?
It changes the direction of the current so the forces act in the same direction allowing it to turn 360
@@lispgirl7666 So is this to produce AC current?
And would it not be turning 180°?
@@deemedepic7721 No. This is a motor, not a generator. It does not produce current but uses the energy from the current to produce motion.
@@deemedepic7721 once it turns through 180 the current needs to be reversed. It is facing the opposite way now so that the electromagnetic forces would push the motor back the way it came if the current stayed in the same direction.
2:26
1:02
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tbh, I understand this completely, but I for the love of the subway I can't explain how a split ring works BUT I KNOW HOW IT WORKS
Would you need to draw the diagrams ?
I think yes because it came in my exam.
Wait that’s illegal
Hi, I do have a question - does current flow from positive to negative, or negative to positive? Everywhere I look the answer is different... thank you!
Yeah it's a bit weird. Basically the electrons from from the negative terminal to the positive terminal, but we actually say that the current (or conventional current) flows from positive to negative. We explain it in our 'intro to circuits' video :)
@@Cognitoedu thank you so much - this is so helpful!!!
@@Cognitoedu Can you please release a video explaining how the motor effect works in Loudspeakers, I still find it very tricky to comprehend
My teacher told us to reflect without teaching us and i was lost in everything but this video helped me to understand it
i love you
Reading this is in the text book is like gibberish this video made it so clear
KSCS