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GCSE Physics Revision "Potential Difference in Series Circuits" 

Freesciencelessons
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In this video, we start looking at potential difference. Some students think that this is tricky but I'm going to show you that it's not. We look at what is meant by potential difference and then what happens to potential difference in series circuits.
This video is based on the AQA spec. If you are following a different exam board then you should check your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
Image credits: creativecommon...
Student studying: Gnarlycraig
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17 окт 2024

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Комментарии : 241   
@GemsAndBenefits
@GemsAndBenefits 7 лет назад
My science GCSE has just been officially completed. I owe it all to you, I completely hated science this time last year, would've been ecstatic for a C grade. Never got above a D grade in any mocks. Your channel completely changed my attitude towards science and hopefully I can bag a few A's in Science now. Thank you for all the work you put in to your videos and I'll be sure to recommend your channel to people who are taking their GCSEs in the future. Not a single revision source out there is better than your straightforward, concise, simple, and 'everything you need to know' channel. Thank you once again, you taught me so much! Anyone reading this that is doing Science GCSE in 2018. USE THIS CHANNEL! Use his 9-1 playlists. I powered through the playlist (the outgoing spec playlists - B1, P1, C1 etc.) a few weeks before exams started (If only I discovered this channel sooner Id've started earlier), and then powered through them once again night before exams and then did lots of past papers. Definitely the best GCSE Science revision source. THANKS SO MUCH SHAUN!!!!🙌
@d4v1do
@d4v1do 7 лет назад
What grades did you get?
@theultimateconspiracytheor5778
I am sooo scared for GCSEs lol.
@washingmachine4993
@washingmachine4993 6 лет назад
TheUltimateConspiracyTheorist me too ....
@kasimpro7653
@kasimpro7653 6 лет назад
TheUltimateConspiracyTheorist same
@EsotericMedic
@EsotericMedic 6 лет назад
@duwang @Kasim Pro What did you guys get?
@lencol583
@lencol583 5 лет назад
You've broken down Physics for me to the point where I'm beginning to find it interesting, I've gone from a 4 to a 7 and I'm considering Physics for A levels. Thank you!
@moterstorm7990
@moterstorm7990 2 года назад
did u choose A level physics also what grade did you get in gcse
@deadlysamurai5192
@deadlysamurai5192 Год назад
He isn’t replying for sure
@Electrico11HD
@Electrico11HD Год назад
@@deadlysamurai5192 fr
@stopnacho
@stopnacho 6 месяцев назад
@@Electrico11HDFr 😂
@zoer5981
@zoer5981 4 года назад
watching these at 2x speed the nigh before a test hits different
@mars3403
@mars3403 4 года назад
yup
@user-oy3hp7gv5n
@user-oy3hp7gv5n 4 года назад
100%
@jess8023
@jess8023 3 года назад
me rn lmaooo
@lilylewis4669
@lilylewis4669 3 года назад
Me right now
@sirpill2509
@sirpill2509 3 года назад
me rn
@eddie9392
@eddie9392 4 года назад
this man has got so many people passes in gcse’s it’s rediculous and i’m hopefully going to be another come june
@damianxavier7343
@damianxavier7343 3 года назад
im doing it in may june too!
@elliewebster
@elliewebster Год назад
Did u guys pass???????????
@stareyedstudygirl
@stareyedstudygirl 4 года назад
when he said pd was fairly straightforward. *shakes head*
@jameschan4929
@jameschan4929 7 лет назад
Are you planning to do A-Level videos once the current year is done with GCSEs? That would really help
@tomfoster1249
@tomfoster1249 4 года назад
Hi sir, I dont understand the definition of potential difference but I get that potential difference shows us what amounts of energy are being transferred in a circuit. Does it matter that I dont understand the exact definition? Or must I go into more detail to understand it? Thanks
@katinahat4898
@katinahat4898 7 лет назад
You're getting me through my GCSEs but I have no ideaa what I'm going to do for A level without your vids :/
@EsotericMedic
@EsotericMedic 6 лет назад
Same :(
@BBBONES-zh2wg
@BBBONES-zh2wg 6 лет назад
Don't worry, there is someone who does A-level physics on youtube. You probably found him
@DeathCorridor
@DeathCorridor 6 лет назад
Dr. A Physics?
@leonfinnen5051
@leonfinnen5051 6 лет назад
Sure he does A-level as well
@ahmedbenhariz8694
@ahmedbenhariz8694 6 лет назад
who?
@sbodenham5896
@sbodenham5896 7 лет назад
Thank you sir you have supported me throughout all of GSCE revision- would highly recommend your lessons to people in lower years so your channel helps others achieve their GSCEs. :)
@NottyC02
@NottyC02 7 лет назад
I have learnt a lot more from watching your videos than looking through a text book. THANK YOU!
@duked9737
@duked9737 4 года назад
This guy is so good we watch him in my classes
@b4439
@b4439 5 лет назад
So if I get asked ‘give a definition of potential difference’ in my exam, what should I put?
@Freesciencelessons
@Freesciencelessons 5 лет назад
It's unlikely to be asked but I would say the energy transferred when a coulomb of charge passes through 1 volt of potential difference is 1 joule.
@sadia9437
@sadia9437 7 лет назад
dude you're amazing, I'm currently revising in the morning of my exam
@Auspoint1233
@Auspoint1233 7 лет назад
Thank you sooooooo much for your videos, my science GCSE was amazing and your videos had a major influence towards this. Continue doing what you do!
@staywideawake8262
@staywideawake8262 5 лет назад
Sir your videos are amazing and while you don't even smile in between, you resembles me like eminem teaching with no cuss words...
@adamroshdy1363
@adamroshdy1363 5 лет назад
i learned more from you in 4 and a half mins than i did in 5 lessons from my teacher
@harrymurray-jones219
@harrymurray-jones219 7 лет назад
Thank you sooooooo much!!!! I have my physics gcse tomorrow and your videos have really helped.
@wwadadd5020
@wwadadd5020 6 лет назад
hi i understood everything but not entirely sure what voltage is. is it the energy transferred from the electrons to the components? and also do you have an exact definition for "charge" ? thanks
@Freesciencelessons
@Freesciencelessons 6 лет назад
In a sense yes. The voltage or potential difference tells us the amount of energy transferred by a coulomb of charge. Charge is simply the total number of electrons (in the case of electrical circuits) but we usually refer to a coulomb of charge which is a very large number of electrons.
@edo6897
@edo6897 3 года назад
hi ,could you tell me why the voltage gets shared equally between the 2 lamps and the electrons arent getting used up in the first one ?. thanks
@kylezinho_
@kylezinho_ 7 лет назад
Will you be doing A level vids once you finish all of the ones for GCSE?
@maryamx9040
@maryamx9040 3 года назад
damn this whole chapter of physics makes much more sense now (revising last minute at 1am 😭)
@simranhans8806
@simranhans8806 7 лет назад
hi sir, and people, hope you all are fine! I don't get what the chemical properties of the halogens is limited to reactions with alkali metals actually means? I don't get it help please. Kind regards.
@sufficientgrace917
@sufficientgrace917 3 года назад
They have the same outer shell electron so they react together well.
@delegend1013
@delegend1013 5 лет назад
I'm in year 7 and it's still helping me
@kashifhussain4898
@kashifhussain4898 5 лет назад
DeLegend 101 same I’m in year 8 now
@Sachin.97
@Sachin.97 4 года назад
Same
@zieemazam8308
@zieemazam8308 4 года назад
same here delegend 101
@fishcake8266
@fishcake8266 4 года назад
I’m in year 4 but I’m a complete nerd and study a lot
@vinukivihasna5232
@vinukivihasna5232 4 года назад
If y’all keep in watching his videos and studying from them I guarantee ur gonna get a rlly good GCSE grade.
@riki2993
@riki2993 3 года назад
you make things so easy to understand, thank you
@ItsMe-eu9br
@ItsMe-eu9br 3 года назад
If I pass my GCSEs, it's on him tbh :))
@joshh5
@joshh5 4 года назад
thanks for the videos, how many exam boards does your content cover?
@Freesciencelessons
@Freesciencelessons 4 года назад
They're aimed at the AQA spec but there's a load of crossover with the other exam boards especially Edexcel.
@joshh5
@joshh5 4 года назад
Freesciencelessons thanks, imagine a reply from mr Freesciencelessons, you help me sooo much but the gcse are gonna be messed up now
@midgetgem7127
@midgetgem7127 6 лет назад
Hello! As a year 11 student who has been watching your videos religiously over the past few months, am wondering whether or not the majority of your videos cover topics that apply to all exam boards ( in my case, edexcel ) A response would be much appreciated :))
@Freesciencelessons
@Freesciencelessons 6 лет назад
These videos cover the AQA spec but the Edexcel spec is very similar.
@maleehahahahaha5578
@maleehahahahaha5578 6 лет назад
these videos are really helpful, I'm really thankful that I found this channel. Maybe you could make an app tho? For ease of video viewing?
@andygriffin3933
@andygriffin3933 2 года назад
im yr 9 and got to do an end of year exam tomorrow for science this guy just explained it better than me bloody teacher did
@oakwood2371
@oakwood2371 6 месяцев назад
y11 now?
@studygeniusk8329
@studygeniusk8329 4 года назад
hi sir i dont know why but i dont seem to be able to understand the meaning of potential difference could u please tell me what it is in a form that is simpler to understand thank u very much
@Freesciencelessons
@Freesciencelessons 4 года назад
Hi. Potential difference is a pretty difficult idea to understand but think of it is as giving us an idea of the energy carried by the electrons (this is a simplification but it's helpful). If the electrons pass through a component (eg a lamp) and energy is transferred, the electrons will pass out of the lamp with a lower potential than they had when they entered the lamp. The potential DIFFERENCE is the difference in the electrons' "energy" between entering and leaving the component. If we placed a voltmeter across the lamp, it would show the potential difference. If we had a cell in a circuit with no components at all, then the potential difference across the cell would be zero volts as the electrons return to the cell with the same energy as when they left (strictly speaking, wires have resistance so a little bit of energy would be transferred but we'll ignore that).
@studygeniusk8329
@studygeniusk8329 4 года назад
@@Freesciencelessons thank u so much sir i now understand it
@archjanasivasuthan6252
@archjanasivasuthan6252 5 лет назад
I just can't thank you enough. You're a blessing!!!!!
@oceanblue2811
@oceanblue2811 5 лет назад
i find potential energy such a difficult concept to understand. Is it the same as the analogy of the water in a tank? The more amount of water(the charge) the greater the pressure at the end of the tank(representing voltage) and when the charge begins to run out(water), the voltage (pressure) also decreases and that's why a battery stops working?
@Freesciencelessons
@Freesciencelessons 5 лет назад
OK, think of potential difference as giving us an idea of the energy carried by the electrons. When they leave the cell, the electrons are carrying a lot of energy. As they pass through components (eg a lamp), some of this energy can be transferred to other energy stores (eg light). When the electrons return to the cell, they are carrying no energy. Some students get really hung up on what happens when an electron passes through one lamp and then another. How do the electrons "know" that they have to transfer some energy to the first lamp and then some to the second lamp. My advice is to simply not worry about this. It's an A Level Physics concept and you should not let it stop you from getting potential difference. I hope that helped.
@oceanblue2811
@oceanblue2811 5 лет назад
@@Freesciencelessons Thank you very much, it makes so much more sense now, I'll try to not overthink it too much.
@260granola2
@260granola2 5 месяцев назад
Is all of this still in the AQA specification?I’ve been looking but I’m not sure since this video was posted 7 years ago,thanks.
@Freesciencelessons
@Freesciencelessons 5 месяцев назад
Yes the spec has not changed and all of this is on the current spec.
@Marvelsupporter_1
@Marvelsupporter_1 Год назад
this man must be protected at all costs
@timetravellingseamstress
@timetravellingseamstress 4 года назад
who else says 'Hey Shaun!' when he says hi welcome back? Just me? Great...
@calcpost3641
@calcpost3641 4 года назад
yep its just you ngl
@frahman1963
@frahman1963 3 года назад
On your left
@sapphiremoonlight23xxx6
@sapphiremoonlight23xxx6 3 года назад
I say it in my head ngl
@asmae6869
@asmae6869 6 лет назад
Thanks sir for the great videos! I have a question please: if the electrons give all the energy provided by the cell to the bulb, then how can the electrons keep moving after leaving the bulb?
@mustufashadab8201
@mustufashadab8201 4 года назад
It is because they still have some energy though least
@zieemazam8308
@zieemazam8308 4 года назад
the electrons heat the filament then leave the bulb
@pahgm6222
@pahgm6222 4 года назад
@@zieemazam8308 But then that would mean the electrons had just transferred all its energy(9V) to light/heat so how would it be able to return?
@Rayyjan
@Rayyjan 2 года назад
@@pahgm6222 because the electrons are negative so they are attracted to the positive end of the cell
@lukemaxim1458
@lukemaxim1458 7 лет назад
Thanks man I watched you last year and I passed my science 😊😊
@bilalmetlo9874
@bilalmetlo9874 Год назад
thanks sir, got my gcses in 2 weeks phyiscs is my fav subject but electricity is the 1 topic that just sucks thanks for ur help
@Freesciencelessons
@Freesciencelessons Год назад
Electricity is actually one of my favourite topics. It looks like lots of random things but they do all link together.
@bilalmetlo9874
@bilalmetlo9874 Год назад
@@Freesciencelessons i agree,i do understand the topic but i just need a bit of reinforcement, also sir do you have any tips for staying focused as i often procrastinate and barely do any revision in 1 day
@Everythingedits458
@Everythingedits458 9 месяцев назад
I know this guy gets like hundreds of comments saying this but… it’s my first time using him. I’ve got a test tmrw when I get the results back I’ll make my decision about him
@zakairud5153
@zakairud5153 7 месяцев назад
go on then
@Everythingedits458
@Everythingedits458 6 месяцев назад
@@zakairud5153 I got second highest in the class!!!! So happy 😃
@lollytape6625
@lollytape6625 4 года назад
Yo I’m bad at physics in my mocks I got a 5 in triple. I’ll come back after watching your videos and tell you what I got in my GCSE’s which are in a couple of months
@jasperbowyer1003
@jasperbowyer1003 4 года назад
a 5 is calm at least u have passed
@je4739
@je4739 4 года назад
Lolly Tape what did you get?
@lizziellama
@lizziellama 3 года назад
hi, this has been a long time ago, but just out of interest - what did u get?
@dariusharja707
@dariusharja707 2 года назад
What did you get out of curiosity? :)
@afsheenshafiq3593
@afsheenshafiq3593 7 лет назад
Your videos are so helpful ! Thank you
@mohameddahir9068
@mohameddahir9068 Год назад
How helpful can one man be
@basement_scene_
@basement_scene_ 7 лет назад
Hi, I really enjoy your content and revision. Whilst sharing you resources with my friends whilst revising we were curious to the origin of your accent? Can you please tell us where it comes from as we have a bet that you're Irish, North Eastern, Welsh or German.
@conorjeffreys4561
@conorjeffreys4561 7 лет назад
Hes Irish I bet
@LouisHillJ
@LouisHillJ 7 лет назад
it's a geordie accent
@seventeenseconds1698
@seventeenseconds1698 6 лет назад
A geordie accent?? No that is quite clearly a Welsh accent. It's certainly not Irish either.
@xx_1dreamstanlegend_xx422
@xx_1dreamstanlegend_xx422 6 лет назад
You're all wrong; he has a Chinese accent... I should know because I'm Chinese myself ;)
@rafikilluddi6413
@rafikilluddi6413 6 лет назад
He teaches at a school where i live in oldham, Manchester
@nic6412
@nic6412 7 лет назад
THIS IS SOOOOOOO GOOD THANKS
@jax1296
@jax1296 2 года назад
Would it be correct to say that as charge flows throughout a circuit and components like a lamp, electrical potential energy is converted to kinetic energy which is converted to light and heat energy?
@nepaligamer4832
@nepaligamer4832 4 года назад
3:04, why don't the first lamp near to the negative terminal gets 9V , i guess that the PD is affected for the second lamp only, what is there to interfere the first lamp in getting 9V PD?
@Freesciencelessons
@Freesciencelessons 4 года назад
Potential difference does not really work like that I'm afraid. The total potential difference of the cell has to be shared out among all the components. Components with a higher resistance get a greater share of the potential difference.
@scadsa2538
@scadsa2538 5 лет назад
What is a coulomb. I would highly appreciate a response
@Nanobuds
@Nanobuds 5 лет назад
Coloumb is the unit for Charge
@harrybrooks2952
@harrybrooks2952 6 лет назад
Should you say via an electrical transfer, energy is transferred from the chemical store of the cell to the thermal store of the lamp
@Freesciencelessons
@Freesciencelessons 6 лет назад
That's correct. Light is also emitted.
@sofijanovikova7271
@sofijanovikova7271 2 года назад
Thanks so much for helping me with my test
@maheenshahzad7369
@maheenshahzad7369 5 лет назад
Hi sir, this is a bit unrelated but google wont tell me the correct answers. How do you determine the half-life of something and the mass number of an atom?
@n.a7848
@n.a7848 5 лет назад
Maheen Shahzad Mass number of atom=number of protons and neutrons Half life= the time is takes for a nuclei to split in half. So if the half life eg is 20 days and initial count rate( this is what it originally was) is 400 counts per secound. And the question was to determine the count rate after 60 days. You would do 400- start of 200- 20 days 100- 40 days 50-60 days So the half life after 60 days=50 counts/s
@not_stxrzzz
@not_stxrzzz Год назад
MANNN GOD BLESS THIS GUYYY😪😪
@lilpatel2702
@lilpatel2702 6 лет назад
but why isn't the voltage between the two lamps shared evenly?
@barrybanter8419
@barrybanter8419 6 лет назад
KiNG Hawky it’s probably because the lamp with a pd of six may require more energy on its own
@fluffybarney5546
@fluffybarney5546 4 года назад
can u please teach it how to work it out bcs i dont understand
@HS-it5mv
@HS-it5mv 6 лет назад
i'm confused to how it can be series if it has branches?
@Freesciencelessons
@Freesciencelessons 6 лет назад
Are you thinking of the voltmeters as branches? If so you need to remember that voltmeters are not counted as branches (effectively no current goes through a voltmeter so it's not a branch).
@HS-it5mv
@HS-it5mv 6 лет назад
Freesciencelessons wait so what is a branch then? And how do you notice the difference between a series and parallel circuit, sir?
@Freesciencelessons
@Freesciencelessons 6 лет назад
A branch is a point where the current can split. I explain it in these two videos: GCSE Science Physics (9-1) Current in parallel circuits GCSE Science Physics (9-1) potential difference in parallel circuits
@junikabunitea3335
@junikabunitea3335 4 года назад
Are you sure this is GCSE because i have a test on this tomorrow and im in year 7
@joanakaur9441
@joanakaur9441 7 лет назад
Hi , could you make flash cards for new spec please??
@lululululululululululululu7583
can someone help me I don't get what a coulomb are
@Freesciencelessons
@Freesciencelessons 7 лет назад
A coulomb is simply a unit of charge. You don't need to know exactly how much charge is in a Coulomb, just that it's a unit of charge.
@ellamurray8594
@ellamurray8594 6 лет назад
Do these videos apply to all exam boards?
@yaboijason8907
@yaboijason8907 7 лет назад
Hey sir do you play an instrument?
@sufyan5884
@sufyan5884 7 лет назад
You're a lifesaver
@rix_1723
@rix_1723 2 года назад
whats the difference between potential difference and coulombs
@Random-nq4xj
@Random-nq4xj 4 года назад
If 9V means that 9 joules of energy is transferred by every coulomb of charge, then if all of this energy carried by the electrical current is transferred into light/thermal energy in the lamp, then how does the electrons have any energy or "pushing force" left to return to the opposite side of the cell? Any help is appreciated!
@sarahfox3959
@sarahfox3959 4 года назад
magic
@fireemperorzuko8756
@fireemperorzuko8756 3 года назад
Potential difference is shared by all the components in a circuit, components with higher resistance take a larger portion of PD than others and I'm pretty sure not ALL of it is taken by both lamps and some is used in the wires too. However this is unnecessary for GCSE, so I'm guessing that's why Dr Donnelly didn't include it, if you'll do A level physics or as a degree I'm sure they'll show it there.
@sophienewton5664
@sophienewton5664 4 года назад
damn this unit's kinda hard though
@revivesauerwein5717
@revivesauerwein5717 3 года назад
Electromagnetism is HARDER HARDER HARDER HARDER HARDER HARDER HARDER HARDER HARDER 😩
@abdosadik6500
@abdosadik6500 7 лет назад
Sir thank you very much! Can you explain me what's the difference between voltage and current please?
@thecarsmissin
@thecarsmissin 6 лет назад
current is the rate of flow of electricity, and voltage is the potential difference
@ala0284
@ala0284 5 лет назад
Last minute revision I have paper 1 in 5 hours
@zn5989
@zn5989 5 лет назад
do we have to learn the definition of voltage?
@ofon360
@ofon360 Год назад
Please sir do videos under Wheatstone Bridge and Kirchoffs calculations.
@mollyw2848
@mollyw2848 5 лет назад
How do the electrons carry the electrical energy? I don’t understand
@n.a7848
@n.a7848 5 лет назад
Molly W Electrons carry a charge of/ have a charge of -1 So theyre just carrying that -1 that they always have around a cell
@emeteriomirado7356
@emeteriomirado7356 5 лет назад
Many thanks for your work
@rolanttv5803
@rolanttv5803 4 года назад
This guy is my G
@malaikas2941
@malaikas2941 3 года назад
CAN YOU PLEASE RESPOND TO ME how to change the circuit to give a negative value for current and potential difference xx
@fireemperorzuko8756
@fireemperorzuko8756 3 года назад
Turn the battery/cell around
@Poppy-ek6lc
@Poppy-ek6lc 5 лет назад
But what is a cOuLomB
@marcelclaude1309
@marcelclaude1309 3 года назад
You are amazing, thank you so much
@oliviaelliott1333
@oliviaelliott1333 6 лет назад
Thank you 💜
@pukkapeter
@pukkapeter 5 лет назад
Never heard potential difference said so many times & I have a physics degree
@Iemons
@Iemons 5 лет назад
So you prefer the term voltage?
@Marvelsupporter_1
@Marvelsupporter_1 Год назад
do we get these work books in india?
@Freesciencelessons
@Freesciencelessons Год назад
You can buy them from Amazon, or if they're not available, then the ebooks are available from the website (freesciencelessons.co.uk).
@EducatorSharmin
@EducatorSharmin 3 года назад
Please could you make more Physics videos like motion, force , Newton's Law?
@miriamhussain2156
@miriamhussain2156 3 года назад
wait why do i kinda *enjoy* physics now :o
@niyuhhh07
@niyuhhh07 Год назад
OUR HERO❤
@jackmilner8481
@jackmilner8481 5 лет назад
GOAT
@midsummxr
@midsummxr 3 года назад
I can smell that Grade 9 all the way from here and my GCSE's are ages away.
@ketsolegoabe9802
@ketsolegoabe9802 4 года назад
My mate👍💯💯
@_A_TruongNhaNguyen
@_A_TruongNhaNguyen 2 года назад
thank you very much
@thorn195
@thorn195 Год назад
if i get above a 7 in my physics mock tomorrow i will buy your merch
@raynebarrett5816
@raynebarrett5816 3 года назад
my mock is in a few hours so I'm here
@SMNOF
@SMNOF 3 года назад
This guy is cool :)
@ayoosiyale1893
@ayoosiyale1893 7 лет назад
thank you.
@rix_1723
@rix_1723 2 года назад
by the way there is a typo at 0:54, is supposed to be "carried" and not "carry"
@adronpereira6359
@adronpereira6359 Год назад
thats grand
@raphaeladeosun6857
@raphaeladeosun6857 6 лет назад
great thanks
@deadshotuk1362
@deadshotuk1362 6 лет назад
physics test in 3hrs anyone hyped ?
@tatenabal490
@tatenabal490 4 года назад
2 years later how did it go
@EdestroyerGolue
@EdestroyerGolue 5 лет назад
It is volts not PD
@Freesciencelessons
@Freesciencelessons 5 лет назад
No it's PD. It stands for potential difference.
@NinjaGamin14
@NinjaGamin14 4 года назад
sir thx
@glebfan27
@glebfan27 4 года назад
what a guy
@bazil8342
@bazil8342 3 года назад
how smart was he when he was a kid
@lilacded
@lilacded 3 года назад
My phyisics teacher sent this link in the middle of the lesson in online class and Im so confused
@alexroach535
@alexroach535 3 года назад
same lol
@Mohammed-hj3by
@Mohammed-hj3by 5 лет назад
1:24 anyone hear that sound??
@ad62626
@ad62626 4 года назад
@Mohammed no? What is it
@danwellsanddangmtb2302
@danwellsanddangmtb2302 3 года назад
potential difference
@Ye___89
@Ye___89 4 года назад
My teacher linked this but im in year 7/grade 6 wtf
@oimandem4373
@oimandem4373 4 года назад
rate that
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