GCSE Physics - Intro to circuits #14

In this video we cover:
- Some components commonly used in circuit diagrams
- What's meant by the term 'potential difference'
- What's meant by the term 'Current'
- What's meant by the term 'Resistance'
- Which way around a circuit current flows

[@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

[@JetStream_RPL]

Hey cognito can you add Cambridge physics to your website if you can thank you

[@minjunkim7373]

You've just taught me more physics in 3 minutes than my teacher has in a whole term

[@justsomeguywithoutamustach3978]

Same

[@huss2k]

Same😂

[@survived_acidyt5525]

same

[@begueannelaure2175]

Fact

[@richardwastaken]

FR

[@jamesznc]

thankyou some much for such a simple explanation that really made sense. I’m struggling to understand it at school and you really cleared it up for me. My gcse physics are all because of you...

[@Cognitoedu]

Thanks Jaycee, glad they've helped 👍

[@TortoiseBoi33_]

👍

[@luceromelendez5310]

You just saved me from reading for over 3-4 hours to undersand this topic. You made it INCREDIBLY EASY TO UNDERSTAND, you are a lifesaver, thank you sooooo much! ❤️

[@nstar3489]

I think I might do well in physics now thanks to these videos. Thank You!!

[@Cognitoedu]

Hey shining!! Great to hear you’re finding them helpful 🙌 little and often I’m sure you’ll smash it :)

[@Cellate]

This convention ruined an entire week for me.
I was studying chemistry and the topic was how ores are extracted and purified / refined . I had kept the convention in the back of my head that current flows from the positive terminal to the negative terminal and I thought that electrons flowed from the anode to the cathode.
I read the whole chapter and made the notes. Then in the end I was all confused because the physics of the ions just didn't make any sense. I researched a lot and then I found this video. I really appreciate your effort. Thankyou from the bottom of my heart ❤️.
3:29

[@SpreadtheWord.podcast]

I just wanted to say thank you for the hard work you put into this video I was literally crying because I couldn’t understand Current electricity but I came across this video and I now understand and I am ready for my test tomorrow so thank you and keep it up

[@Cognitoedu]

Ah thank you so much, really glad to hear the video was helpful 😊

[@mysteriouspuffling3910]

Been cramming 5 gcses in 6 months after taking a year's break. Gotta finish everything for the summer exams getting preferably 7s for maths and physics. You might save my life. You make everything sound so simple. I am eternally gratefull.

[@Cognitoedu]

You’re very welcome - really happy you’re finding the vids useful 👍

[@khoi_0918]

Tysm cognito you’ve saved me so many times in the past year pls make more videos they’re genuinely so helpful

[@uberfoxyfox6207]

this been valued within this time of isolation thank you

[@chillbreeze1189]

I found this video by accident and it might have just saved my GCSE physics, THANK YOU!

[@rerereuj]

I'm a little bit annoyed by the whole "it goes from positive to negative" thing. I don't really understand how after they disproved that theory they still kept it. Imagine if other areas of science did the same thing, like if astrophysicists decided to keep the geocentric model just because it was used in the past

[@levizst9458]

Me too, i’m confused on why we are learning the wrong thing and have to approve of it

[@sharkyeditzcc]

This is so helpful the fact that i have a test in 3 hours is still haunting me

[@_bumd]

1 hour left, 0 revision done, am i cooked

[@Kyzick]

whos here because your teachers set us work here ?

[@rhiannaosborne9697]

Kyzick paha

[@randomness8361]

Kyzick yep

[@tome6139]

Kyzick yep

[@prithvi2836]

Pain

[@Keffv3]

yuuuuuuuup

[@FruityTruity]

I'm here because I have an exam, anyone else?

[@mansha_o]

me 2

[@amandaplays1017]

Yes😅

[@rctrovids9200]

here because i did no work last half term and i need to understand this

[@ChrisSucks]

stupid ass lmaoooooo
but for real good luck

[@gibberish7341]

Bruh same

[@sh3llie]

u have literaly saved my mocks and my life I love u so much

[@abdullahsheikh1935]

may God bless you bro, tomorrow is my phy sendup and i have done 60% the rest i will do from your videos.
Thanks man for upload these videos

[@alimalhi1329]

at the end for the exam part didnt you mean that you should just remember that currents flow from the negative terminal to the positive terminal

[@jediknight948]

Who's here cause they got a big test tomorrow and your teacher didn't teach you anything 😂

[@lynyae2105]

meee

[@user-pl4kg4yh4q]

thanks Cognito for all the gcse video ☺️ theyr’re easy to understand and high quality!!!!

[@Cognitoedu]

Thankyou, glad you're enjoying them 😊

[@itsree5221]

Thank you for these videos! I was unclear about some of the topics before and I think I'm confident now!! :)

[@Cognitoedu]

Glad we could help! 😊

[@hawkingrogers4486]

The best most comprehensive and easy video found on utube regarding olvel physics

[@kindlystyles9246]

you explained it so well this helped a lot thank you so much

[@sallyalpachachy785]

Thank you sm!! One thing that i was confused on was when you said the shorter line on a cell diagram is negative. I remembered my teacher telling me it was positive and negative was the longer line. Other than that, i think you video is great and it will help me a lot for my stressing exam tomorrow!

[@manahil8520]

-

[@manahil8520]

uh so im gonna just jot this down..
the information in the video is correct, since that is what the gcse physics book has in it-
if that what ur teacher said then you might wanna confirm again

[@gianvih]

What does the IGCSE cambridge physics esam uses? Conventional current or the other one

[@snigdhaaadas]

thank you so much this cleared up literally everything for me

[@annymus4502]

Wow! Thank you very much!
This was really helpful! :)

[@Cognitoedu]

Thanks for leaving us a comment! Really happy to hear it helped :))

[@annymus4502]

Wow! You actually replied, this is amazing! 😊
Anyways, I should thank YOU guys for making free-learning accesible for everybody in UA-cam, you are the real heroes, and probably many people have understood some concepts thanks to your videos.
Keep up the good work, and have a nice day!
Btw, how did you come up with you channel name, I still don’t get it?

[@TortoiseBoi33_]

Nice

[@aliwasi1082]

Great video - keep up the great work. Huge help!

[@Cognitoedu]

Thanks Ali 😊

[@FLM_OFF]

This guy be saving lives

[@chloranzee3364]

i only slept during my physic class and now i have exam tomorrow and i don't know shit about anything, you literally saved my life

[@norakzaikhan2999]

My man literally the best

[@WaranaSJ]

Earned a Sub! such a good explanation

[@3TH3REAL]

I ain’t reading any stuff, this is part of my revision

[@jamaluton725]

LISTEN, THIS VIDEO SAVED MY EXAMS

[@adxsoulja]

cognito the goat of online teaching

[@gordonlouie4755]

this channel is officially the best channel ever

[@-unkownrblx-]

Thank you very much for making this video it was very helpfull

[@philipbrady9358]

Clear and concise

[@zwiv9792]

Is this for edexcel or aqa, or both?

[@serenalty]

hey you're videos are great youre like an upgraded version of free science lessons, but id like to ask if u can make a vid or reply instead as to how to stay motivated to study and how to study effeciently, and if its possible to add exam style questions in ur vids thank you

[@rabbitman8535]

Here's two things you need for motivation:
• somewhere you wanna be (e.g get a great grade like a 9 so you can have the revision skill to get great a-levels and you can get into a great university so you can get a great job so you can live a satisfying life happily and died happy)
• and somewhete you don't wanna be (get a average or bad grade e.g 4 then you don't have the work ethic to get a good a level or you may have to resits back tracking your life by a year then you don't get into a good university you parents are disappointed you get a mediocre job you don't like you and then your just sad)
Hope that helps to motivate you 😊

[@serenalty]

@@rabbitman8535 lmaoooo tyyy

[@rabbitman8535]

@@serenalty lol no problem

[@js06v]

freesciencelesssons will always be a g tho

[@rabbitman8535]

@@js06v obviously

[@malikmahran5364]

well done good job sir

[@aminhadef746]

thx soo much
:) i understand

[@serowi2337]

why is the cell/battery depicted differently in the start and end

[@nettewildkatze8135]

I am here cause of our online class btw im Yakup if u see that SiS

[@arctic7805]

thank you sooo much I have a physics end of term exam tommorow and this makes it so much easier to understand

[@davidhill8163]

Many thanks

[@bread2315]

I have a test today and slept in and this is the only studying I'm doing for the test✌️

[@user-md9fx7mc4m]

Thank u😊

[@mikewazowskigaming3029]

Thank you

[@henryallen4181]

THESE VIDEOS ARE SO AWESOME LOVE THIS OMG!!!! XOXO

[@KhalifaUmar-ur7rc]

Thank you for help😊😊😊😊😊

[@Sf_edit]

Thank you so much thx for explain I got A+ in physics thsm

[@job9650]

i thought you used 9-1 at GCSE? and even at A-Level wouldnt it be A* not A+

[@levizst9458]

If current actually flows from the negative terminal to the positive terminal, why do we learn it the other way around?

[@RH3739]

It’s suppose to be all connected in the circuit all the wires must touch the switch batteries and lightbulb or it is considered as a open circuit

[@hanah_31]

2:27 (in short) resister 'changes' the flow of current.

[@user-gg4qh8yw1w]

banger!!!!
:)

[@aldatarx]

i don't understand, why do we need to say that the current flows from positive to negative when it actually doesn't? I have my nationals in physics tomorrow and im so confused-

[@kinapindeesebich]

this might be a bit late but when benjamin franklin rubbed a tube with a cloth and touched it, he discovered static electricity, he assumed that the static forms when the electrons from the tube is in contact with our hand which has no electrons. After this discovery, battery brands changed the negative and positive symbols on the sides according to his discovery. but joseph thompson found out that when the tube is rubbed by the cloth, the cloth takes away the electrons from the tube, so it has no charge, when a human touches the rod they get static electricity because their electrons are transferred to the rod. but because most battery brands already made everything according to benjamin franklin's theory, nobody changed the design of the battery to the correct way which was negative -> positive. so every battery brand still labels the sides wrong, the positive and negative signs need to be switched in order to be factual. this battery design is called conventional theory. so when you're drawing a battery with a circuit, you should draw the electrons as if they come from the positive side to negative, but when they ask you to answer in words as to where the current flows from and to, it should be negative to positive. so, the drawing of positive to negative because of the battery is labeled as conventional current, which almost everybody uses to draw. i hope this answered it.

[@thehunterwr4666]

​@@kinapindeesebichok

[@xollaj]

thanks

[@sasirekkhaselvaraj2936]

❤❤❤❤❤❤❤❤❤❤❤❤thank you so much for helping my b

[@nourinsohuinusohuinu538]

I thought that in my exam It would be like negative to positive...Well I guess you were right. Soo...heres a like and thx

[@otakugolv4187]

thanks to u i got 7 A stars.

[@KhalifaUmar-ur7rc]

How do you work out can you help 😊

[@meganchicken4159]

my teacher uses this channel so often that i recognise the voice ahaha

[@nomice8001]

U teach better than my teacher 😭

[@ruthhelen2990]

very clear thankyou

[@amelialalllalala3914]

i agree it is clear

[@Maryam-uw3xx]

OMG U MADE IT SO EASY

[@ahmed_tamer6873]

in 1:03 the two cells are not connected together so there is no battery it's a big mistake

[@ireallylovemangoes31]

ahhh i'm even more confused

[@shushucool438]

thank you so much that's helped me a lot and wit my English too thank u the best ++++++++++

[@hjj-to9tx]

🐐🐐🐐🐐🐐

[@dantenegron853]

Mr G sent me here

[@GCSEPhysicsExplained]

Great video! Help with circuit symbols ​@​

[@user-ux3kp5in1n]

who needs teachers we have this guy 👍👍👍🎉🎉🎉

[@hritvikharshakumarhegde2227]

topper

[@ghalibplays7802]

Have O levels July series physics exam in less than 7 hours🤧

[@xollaj]

how did it go?

[@fishmao3887]

I’m so bad at science, all of them. Uh oh

[@petguin1705]

Thank you so much

[@idunno892]

Im doing this for science

[@maisiemadden1500]

Same

[@shrikantbabhulkar1572]

How is the resistance related with current?????

[@neeldasgupta2441]

V=IR

[@TWStimes]

How did you make your youtube profile picture?

[@syrahanand2392]

ohms law v=ir

[@aahaanjeswani]

​@@TWStimesGOOGLE

[@getlacag9144]

U said current flows from negative to positive then switched ur answer im confused

[@Cognitoedu]

Hi Yusuf, what we’re saying is that in reality, electrons flow from the negative terminal to the positive one, but due to historical convention, exams expect you to write that current flows from the positive terminal to the negative. Hope this helps :)

[@amelialalllalala3914]

@@Cognitoedu bruh thats so confusing :C thankyou for explaining it

[@manyabhanti9197]

@@Cognitoedu is there a reason they kept this convention, besides simplicity?

[@Cognitoedu]

​@@manyabhanti9197​Not that I know of to be honest.

[@savagex_2008]

I’m in grade 7 and learning this what about you?

[@savagex_2008]

Tell here

[@Khushi-qo6qx]

lol i'm in grade 10 we learn this stuff 😂

[@savagex_2008]

@@Khushi-qo6qx my cousin also learned it in grade 10 that’s I was asking
I guess I’ll study college stuff in grade 10 😆

[@Mouaz111]

@@savagex_2008 i am in grade 9 and learning this looooooooool

[@t_t725]

@@savagex_2008 why do you say 'grade 10', its 'year 10'

[@nashyrg3523]

Tomorrow i have an exam

[@omar.dado07]

Who’s from de la sale ?

[@geogeo5499]

Who's here cause they have a test tomorrow

[@WaranaSJ]

me

[@Shankss..]

My dad forced me to do revision b4 next lesson

[@katiemacaffer3834]

Anyone have there gcse today and have no clue what there doing

[@Noone_161]

Who has a caie on 13 may lol

[@marynassuna3792]

These diagrams are just wrong for me.
I like it more legit

[@studiocc7742]

Taking online classes
Who else

[@xAyxxn]

thanks