If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it'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. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - 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. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom
Malaysia's currently closing school for two weeks, my school did not manage to prep for online classes so we would not be having lessons online. Self-study with Cognito's video, totally recommending! Thank you so much.
I have my exam tomorrow, I watched your videos since last week or something and it really helped allot, thank you for posting these...the man we want but don’t deserve 😂😅
If people who love physics and do not have a good teacher, they would lose their interest in the subject but because of you, keep their interest in the subject. THANK YOU
A wire - current flows through it from bottom to top. The electric current produces produces a magnetic field all around the wire, which can be represented with field lines - concentric circles around the wire, closest together near the wire, as it’s where the magnetic field is the strongest.
Hi Ivab, we've not managed everything in that chapter, so we've only got the motor effect video coming out tomorrow then sadly that's it for paper 2 this year. Good luck!!!
I just noticed that the orientation of the other wire of the solenoid must be on the other side if it's on bottom. Haha. Btw, the video is so helpful for understanding magnetic fields. Thank you and keep up!!
Magnetic field lines move from north to south, so the lines on the bottom left magnet is correct. However if you are talking about the magnetic field direction in the solenoid, it depends whether the solenoid is coiled clockwise or anticlockwise. So in this case the diagram is correct.
The wire used in an electromagnet which is wrapped around an iron core must be insulated. A bare wire would cause current to pass through the core creating a short.
Video was very helpful!😁 Thanks for giving me knowledge in a beautiful way❤️ . Can you please give lessons on topic "light " too. Light chapter is in our course curriculum CBSE. But I can't understand anything as in india, we are not taught how and exactly what a thing is! They just make us gulp the text written in the book. I know it will take a lot of effort to make a video . But please help sir🙏 . Respect your knowledge ! Regards, Pranav Sharma Hope. You will reply👨🏫 my best teacher❤️
I do not know how to thank you! .You quelled my fear and now at least I have a modicum of confidence in physics . Your explanations are really helpful and succinct .
This is the best video that helped me understand more and learning more about electromagnet. I was struggling to understand in my class about electromagnet and this made my day. :)
@@endocryne8594 Maybe the mathematicians should develop a symbol for the human hand to put into their equations: (a + b) (👍) = a(👍) + b(👍) Seriously, how is this objective science or mathematics if it can only be expressed by reference to the human hand?
These videos are great. Thank you for making this resource. I had not understood electromagnetism or the right hand rule before this video, so I thank you.
Thank you I have a test on electromagnets tomorrow and I didn't understand anything but this 5 min video has helped me more than my teacher has in the last 3 weeks of doing this topic :) tysm
