GCSE Physics - Electromagnetism #78

In this video we cover:
- What electromagnetism is
- How it works in wires, coils, solenoids and electromagnets
- How to increase the strength of an electromagnet
Exam board specific info:
AQA - Everything is relevant to your course!
IGCSE Edexcel - Solenoids are separate/triple science only, but the rest is relevant to everyone
Edexcel - Everything is relevant to your course!
OCR 21st Century - Everything is relevant to your course!
OCR Gateway - Everything is relevant to your course!
Maths Playlist:
• GCSE Maths (9-1)
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
• Video

[@Cognitoedu]

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

[@baldmermaid]

omgg dis website help me a lot in my exam

[@Elizabeth-ol1lx]

do we need to know why/how each of the four increase strength?

[@AzaanIQ74150]

​@Elizabeth-ol1lx that's the whole point

[@PLAYING_LIFE]

still free????

[@fatimaakhtar1550]

literally this is an easier explanation than my textbook

[@mouhamadalimoufleh618]

The text book is so fucking trash in this lesson bro jeez

[@anthonybawia99]

I have test in literally two hours and I don’t understand a word from my textbook

[@mouhamadalimoufleh618]

@@anthonybawia99 lmao howd it go

[@anthonybawia99]

@@mouhamadalimoufleh618 omg thanks for asking, it wen so great, I got 100 so I’m safe

[@mouhamadalimoufleh618]

@@anthonybawia99 ayo ? 100 holy moly wtf dym by SAFE ? Bro u slayed that exam lmao

[@leylaspiteri8917]

Thank you... I learned more in your 5-minute video than in 3 years of physics lessons. :)

[@zenmkultra]

If only teachers explained like this, physics would be so much easier and students would see the beauty of it instead of being terrified of it

[@user-wj2np6wy1i]

But 😢 my teacher don't know physic maybe she get the job as a teacher with money ,

[@Officer_Goose]

Exactly! 😅

[@user-wj2np6wy1i]

@@Officer_Goose Yes , exactly

[@josielance7134]

Thanks Cognito! I don’t think I could have got through my science GCSEs without your videos!! Can’t believe the final one is tomorrow!

[@Cognitoedu]

Hey Josie! Thanks so much for the comment! Hope you have an amazing summer and get the results you wanted!!

[@oatmilkpeek1291]

i be doing this in year 8 xD

[@Buzzzy-bee]

@@oatmilkpeek1291which country do you live in

[@yuq11]

@@oatmilkpeek1291 same lmfao

[@husaamasam5827]

@@Buzzzy-bee Ohio 💀

[@sarahkhan231]

Awww..one year of studying this chapter is equal to this 5 min video..makee more.thankss❤❤❤😊😊

[@gennybetwana9620]

Thank you for these videos. Physics makes my skin crawl but at least i understand it now. Edit: Got my grade 8 in physics. Doing for a level now

[@janetkwami4423]

We the same then

[@justsomeone5660]

any tips pls? I have mine soon and I'm stressed 😭

[@Kamabakogonpachiro]

@@justsomeone5660 ah look at me in 5 hours I have my gcse physics and I am not even good at it I am just chilling btw how did you do ?

[@justsomeone5660]

@@Kamabakogonpachiro I did the same exam today lol, physics Edexcel 2PR?

[@Kamabakogonpachiro]

@@justsomeone5660 yep how did you do 😂? I am kinda happy that it’s finally over

[@olivercarey3627]

6 hours on this topic, gave me equal knowledge to these 5 minutes. Thank you.

[@dontforgetthegame]

Brilliant, it's amazing how long I had to search for someone to explain this as clearly as you have just done. Thank you

[@Cognitoedu]

You're very welcome! 👍

[@Yuki.starler]

Watching this 5 minute video taught me more then hearing my teacher rambling about nonsense-

[@someone_994]

Exactly! , bro yaps more than me 😞

[@BedlessPro1]

@@someone_994 nah bro i was ones cuaght sleeping cuz my teacher wont get stright to point bro will yap as if i ordered a yapichitno

[@someone_994]

@@BedlessPro1 WTF 😭

[@BedlessPro1]

i might not focus in class anymore after this channel

[@user-yr3xb8dm4j]

Thanks so much for these science videos and your website. Today's the last day and im so gassed I don't have to do physics anymore!!

[@willtocq1180]

As a year 9 who hasn’t even started gcse work yet. This was more helpful then my physic lessons at school so thankyou

[@hamzasherasmat6593]

Are you in Y11 now?

[@sashaArteaga-ns9yo]

we dont care .

[@Vibiine]

This is so good, EXACTLY what I needed, thank you so much!

[@assault_v6566]

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 😂😅

[@chandiofan3932]

@Cluwey man doing gcse but can’t spell gcse lolllllll

[@ryou6453]

@@chandiofan3932 haha wtf is this shit

[@husaamasam5827]

@Cluwey man texts 6 months later when he probs abandoned that account

[@zak2478]

@@chandiofan3932 💀

[@indigo_editzz]

@Cluwey Bro can’t even spell “gcse” lol.

[@jasminecox9917]

Had my year 11 biology mock today literally watched your videos all weekend to help me, it worked thank you!!!😂💗

[@Cognitoedu]

Ah good luck Jas! Keep up the good work 🥳

[@lauramiguel7]

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. :)

[@michellekhaw3356]

Can you post more of this ?? It is really helpful and thanks a lot !

[@xiguahope]

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.

[@formerunsecretarygeneralba9536]

Heeey what are the odds of finding another Malaysian on a KZbin video about physics.

[@madlad25]

@@formerunsecretarygeneralba9536 very high

[@Saifullahkh_]

Literally tomorrow is my exam and this helps a lot

[@urmipal8038]

Sir you really cleared my doubt 🙏 I appreciate your work 🤗

[@winpattanaphol]

Very informative video! Love it!

[@ash._.exe._.crashed]

no bc why is cognito so elite😍👑

[@sprayi088]

this is so useful tysm!

[@itsmarc4279]

now i finally get it! 😁 so many ppl explained how is it works, but this content i understand the most🙌

[@mayahartup8906]

Thanks so much! I haven't understood this since yr7 and now I do!!

[@ADL1337]

This is a very succinct video and your voice made it just that much more pleasant to watch!

[@mrbananafuzzyface1755]

Massive respect to you for making this video!!! 😊😊😊

[@monetweldon8672]

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.

[@Cognitoedu]

Thankyou, electromagnetism can be tricky, glad our video could help you out 😊

[@aryansharma_2036]

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

[@Cognitoedu]

THANK YOU Aryan!!!

[@newbybits]

Best explaination 👍

[@raicyceprine8953]

it's a 5 min video but it's explained very thoroughly

[@tanrowenascgss7532]

thanks for your videos!

[@doIknowyougoodsir]

Man tysm I have my final physics exam this year and i just found out abt the F=BIL rule , we were not taught about this in school THANK YOU SO MUCH

[@eyadhaitahm6293]

i would like to give u a huge thanks for explaining this part for me i have been struggling to understand how current works with magnets

[@alicem0711]

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

[@lucidgore8671]

thanks so much this channel is saving me from failing my gcses

[@fdf2728]

Thanks so much!

[@Rosa123h]

I’m nowhere near my GCSEs but this is my special interest and this video was very interesting

[@user-up5di8ln7g]

i envy you, i wish i enjoyed learning about electromagnetism lol

[@Burp_er112]

Nerd

[@damiloladabira8919]

am impressed by this explanations

[@Prime_Waleed]

you teach a whole year course in 2,3 vids. big fan of yours

[@flandre519]

Thank you you make it so simple ❤

[@fauzianaz4982]

excellent explanation

[@marcolata7054]

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!!

[@adamabdul733]

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 .

[@Cognitoedu]

That’s great to hear, cheers Adam and good luck!

[@abdulnasiromar6916]

Shuuuush u neek 😂😂

[@zt.4756]

@@abdulnasiromar6916 allow stfu u wet guy the poor man just wanted some help in physics

[@madlad25]

speak english

[@indigo_editzz]

@@madlad25 he is smartass

[@mariamcu84]

this is so helpful thank u so much

[@BLE3T]

this was the best time anyone explained physics this still helped eve if I am a year 8

[@omny3241]

I don't know how to say thanks. You helped me so much

[@syedhabib5933]

great job

[@yashaswar1973]

4:15 It says 'Increase number of coils' - it should be increase the number of turns (which you say in the voiceover)

[@eishalkhalid3755]

Actually, it means the same, we increase the number of coils/ we turn it more.

[@jonathanlim681]

thsi guy carrying my test rn

[@Symbiote-Edits]

Thank you

[@m4897_]

You made this topic so easy and simple for me !

[@Cognitoedu]

Glad it was helpful!

[@lolpro0496]

This is so useful tnx

[@Data4k_]

This is helpful because were doing electro magnetism in class

[@newbybits]

Exam tomorrow 👇

[@hannahhamad8661]

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.

[@kys296]

This man literally saves lives

[@bavitra2183]

Will you be able to finish all the magnetism by Friday

[@Cognitoedu]

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!!!

[@xruvie8652]

Hi, is there a rule that allows us to tell which pole is what using the direction of the current and the direction of the current using the poles?

[@ahmadqasim4773]

u r literally the GOAT

[@easilyexplained5877]

i literally learned more in 5 min than a lecture with my teacher!

[@kiki_1647]

U explain this better than my teacher ever will do

[@syt4453]

@3:41 I am confused with the magnet direction. It seems to be the opposite of your presentation if you google it. Could you check?

[@alisaudhaan6612]

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.

[@julezhao9641]

Love your video! It is definitely usful. Where can I download the PowerPoint ?

[@Jasmine.561]

From Microsoft

[@Jasmine.561]

If you’re using windows

[@bavitra2183]

Omg thank you so much I didn’t get this

[@irproductions6388]

This 5 minute video explains better than my teacher who’s been doing this topic for 1 week. The school system 🙄

[@kiki_1647]

Honestly

[@awsafrkhan4356]

hey cognito, how do you know if you need the triple science videos or not? I'm new so I don't know

[@Cognitoedu]

Hey it depends on what course you’re doing - the easiest way to find out is probably just to ask your teacher

[@vislavathkirankiranvislava8619]

When did I was seeing these vedeo very good understand thank u sir

[@madlad25]

read ur comment and question your life decisions

[@hannahhamad8661]

Direction of the magnetic field - depends of the direction of the current. Determined by the right hand rule.

[@Girl-boss345]

Superb

[@ghoroahupaikomupokoronaran5574]

Was kinda helpful

[@vnana2991]

this is so cool

[@BedlessPro1]

wow really helpfull

[@elirich4815]

is all the physics done? for paper 1? or will you continue and then go back? thanks

[@Cognitoedu]

Hi Deets thanks for the comment - we're just pushing the magnetism videos out ready for Friday, then back to paper 1 material :)

[@elirich4815]

@@Cognitoedu Thanks so much for everything you are up their in the holy 4 channels for revision among gods such as Mrbruff and primrose kitten

[@Cognitoedu]

That’s a hugeeee compliment thanks so much 🥳

[@shu-porang-porang-linos]

What would happen if you used a hard magnetic material (instead of soft) when trying to increase your electromagnet's strength?

[@sejo3473]

watching this at 2:26 am makes so much sense

[@user-to5hd9et5m]

Can you make a video about magnetic flux? Tnx

[@hannahhamad8661]

electromagnetism: Phenomenon by which electric currents produce their own magnetic fields. Wires, coils, solenoids, and electromagnets.

[@mewsicman9541]

Love it

[@user-zo9hq2mu5o]

Tho not GCSE student it's really helpful for me ...this explains better than my teacher

[@MadMan-qp5su]

i think you just exlpained in five minutes what took my teacher six spells and two weeks, thank you hahaha

[@WAK3_UP_]

Mr Tu’s class where u at?

[@psd4942]

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❤️

[@rogerg4916]

How would we mathematically express the direction of the magnetic field without reference to the human hand?

[@endocryne8594]

im not sure you can

[@rogerg4916]

@@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?

[@mark303murphy]

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.

[@ilovepercs3708]

I’m in class

[@Trixzyy_67]

same

[@dharmandharman7487]

Plz explain max well equation engineering physics

[@1968GINGE]

Afternoon just seen your post can I private message you please I’ve got a question and info I want to ask you please

[@HiHello-mm1ff]

I did a topic test on this and got 2/30… hope this helps 😭😭

[@BedlessPro1]

i am only year 8 but i still want to learn more thx!!!

[@depressedsis]

Although the voice over is pretty clear, its better if you can add captions, please. For me it makes it a lot easier

[@Thatcoolguy56]

there is a feature in settings called close captions so when u click on it go to auto-generated

[@Thatcoolguy56]

@@depressedsis oh ok

[@duckbuckcomics4101]

“It’s going to get harder” What it is 2+2=4

[@spectrum4real208]

4:50 What would happen if we put a permenant magnet there instead of an induced magnet...would it make a difference...

[@mohammedreiyan7075]

Just leave it bro

[@spectrum4real208]

@@mohammedreiyan7075 🙁

[@mohammedreiyan7075]

@@spectrum4real208 sorry bruh

[@satan4047]

Do Magnetic Fields produce Electric Currents?

[@endocryne8594]

other way around

[@martacosta9631]

LIFE SAVER

[@NoLimitAyan]

❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤THANK YOU ALOT CONGIT

[@federicomartinez4474]

Buena siesta fue la que me pegue mientras veía este video.

[@venusdreams8774]

You saved me

[@b.n.j.l7888]

Hi sir, you called a solenoid a electromagnet, but i thought an electromagnet is a solenoid with a iron core inside?

[@libertygwatidzo9161]

Easy to understand than text books