All of AQA Electricity Explained - A Level Physics Revision
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- เผยแพร่เมื่อ 10 มิ.ย. 2024
- All of AQA Electricity explained for your A Level Physics revision. This video is revision of all the material you will be taught in your first year of A Levels. It revises some of the GCSE content you will be familiar with, including current, potential difference and resistance. Component characteristics are covered with the IV graphs for resistors (ohmic conductors), filament bulbs and diodes. Resistivity is introduced and the way that some semi-conductors decrease their resistance with temperature and some materials even have zero resistance at really, really low temperatures.
Circuit rules are covered that include the conservation of charge and energy, the resistance of resistor combinations, potential dividers and internal resistance and emf. A complete summary of the topic. Don't forget of course that there are hundreds of in depth videos on my website that explain everything in this video in even greater detail.
Thanks for watching,
Lewis
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watching in 1.25x speed for even quicker knowledge gains 😎
yes
2x 😳
when you have an exam in 16 hours and 17 hours worth of revision to do
that's weak I'm at 2x
@@georgephillips8265 aahhh I see ur a 2x noob
*laughs in 3x*
I'm not even kidding. I used to get 60's and 70's for school exams and after watching your videos I started to understand physics concepts at an unbelievable scale. I managed to get an A* in the final examination! Thank you so much! Please keep uploading videos to help future students!
Great job!
how else did you revise? I’m in year thirteen and really struggling :/
@@frieda1471 I find that teaching is one of the best ways of learning! Teaching your parents, friends or even a stuffed animal! It enables you to word things in a way that is easily understandable and therefore benefit you. You will be able to remember content so much easier as your brain will really be processing the information:)
0:00 introduction
0:26 - GCSE Revision, I-V Graphs, Ohm's Law, V=IR and Proportionality etc...
8:17 - Resistivity
9:32 - Resistance and Temperature Proportionality
10:36 - Semiconductors and Thermistors
11:47 - Superconductors and Critical Temperature
12:30 - Summary of Topics so far
12:41 - Kirchoff's First Law
13:23 - Electromotive Force
14:33 - Current and Potential Difference in Series and Parallel Circuits
16:45 - Calculating Resistance across Parallel and Series Circuits
18:16 - Power
20:05 - Potential Dividers
22:25 - Internal Resistance and Its relation with the Electromotive Force
thank you
i absolutely hated electricity but now after watching this, I feel confident in answering some question. ur a big help and I cant thank u enough
Great to hear!
Omg same, legit did't understand a word now understand it a bit better. Thank you
love the profile pic
Lol let me not fail in my test tomorrow🙏😭✨
Good luck!
@@PhysicsOnline thank you :))
Me right now watching this the night before my test
me watching the hour before my test
me watching during my test
I have an electricity test tomorrow and lord knows I needed this video. Honestly can’t thank you enough
Bookmark: 20:12 - Potential Dividers and EMF
I needed this lmao thanks
When I started revising electricity, it seemed so much more complicated than when I watched this vid. Thank you for simplifying it for us!!
Thanks for the immense help that all of your videos provide! Got my exam in less than 24 hours and you’ve helped a lot
These all of topic A Level Physics vids are amazing, they always link everything nicely to truly understand the topic at hand. Thanks for these videos.
your physics revision videos are like gold
Thank you for making this video! it is so useful to have all the topic explained in one video, I’m always worried I’m going to forget to revise something
i have my physics paper 1 exam in a couple of days and this has really helped. electricity has always been my weakest side and i felt kind of lost but after watching this i feel like i can finally pick up the pace in revising this area. thank you so much
im assuming the paper did not go well?😂
Seriously going to help me with my physics test on Wednesday, thanks for making this!
Thank you for sharing! This is such a great resource for teachers and tutors too =)
This is so incredible. Thankyou so so much. You’re a legend
Bro. Fr these video gonna save me. If I don't understand the lecture in College I would watch your videos. Man you are a life saver
Don’t even study physics, just searched “people having breakdowns over a levels” (as it makes me feel better) then this came up
Legend says he keeps liking comments even after 10 months
Thank you so much! I have my AP2 tomorrow so this is really useful!
erm, exams were cancelled
i have my mock tomrrow this has really helped me a lot THANK YOUUUU
Really helpful, thank you!!
Thank you very much.Got every point what you said.Really helped me
Thank you sooo much.This will help me a lot.
These are really helpful! I wish you made exam revision videos for second year of A levels as well.
it was very helpful to recap all the electricity content.
Thanks
lol i needed this for my physics test tomorrow, thank you 👍🏾
this vid was smashing. you went on a mad one chow. much luv from B8
THIS WAS SOOOO HELPFUL.
Thank you so much for this!
just realised this was posted about ten days before it was announced that exams were cancelled lol. using this now for revision :0 very useful
exam tomorrow, this is so useful, thank you so much!
You have earned my respect
Thank you so much, this is acc amazing for revision :)
Thanks - this is probably my weakest area for Thursday but you explained it well
you are a literal god
Thank you very much !
I Have my Mocks tomorow thx for saving my life
THANK YOU SO MUCH FOR THIS
Hi Sir,
Have you got a revision video for aqa particle physics?
Thanks for your hard work
Thanks for the video, my mock is today!
Bruh same kinda, I have a physics test on electricity today
I havent studied anything of it cause ive been struggling to keep up with work. I literally taught myself all electricity yesterday night and wrote up all my notes and here i am trying ot cram everything half an hour before my test
@@zorossenseofdirection2698 what did u get on the test did u pass?
Doing a vid for CIE would be great!!!
I AM LOVIN’ THIS😍😍😍🤩🤩🤩
Good job sir.
end of topic test tmr i am very thankful
I have been watching your videos throughout the entirety of my A-level Physics course and you have helped me with my understanding so much. Now I'm a week away from Paper 1 and I'm rewatching your videos, whilst going through the CGP guide, because they are so good. Thank you so much for all your hard work to help us out! :)
Amazing, hope they continue to be helpful for you in these last few weeks.
Interesting that despite being an ISC student, I can study from an A level tutor, and still be able to understand the topic with clarity. Nice mind map by the way.
Really an underrated channel for physics
Thank you
It’s the Uplearn guy😎
Or Up Learn use the Physics Online guy!
Could you do a video on battery chargers where there is one battery charger and cell in series with opposite terminals connected ? These question always come up .
Sir, for the last part about resistors and cells in parallel, how does the current and resistance add up and say we connected a lamp in parallel to the circuit drawn, what the current and resistance be.
Me watching this 1 hour before my test😝
Thank you so much for the effort you put into these videos. It would be super helpful if you did one for OCR A
Thank you, that’s my plan.
@Tjk_ SkaZeRe.m.f stands for electrotmotive force. It is essentially the total electrical energy supplied by the battery sent around the circuit. Units are V. The weird looking E represents e.m.f in the equation and is also the Greek letter known as epsilom. Hope I was able to answer your question.
Anyone else watching this the day before their electricity test?
Man we owe so so much to uu 😭😭🙏❤
Thanks 🙏
Great video sir 😊 insha'Allah I'll do better in tomorrow's test
I had no hope but when I watched this .....i felt I should not give up ..thanks
This is super helpful, please could you do OCR too
Will do
Hello, how do you derive the length of a wire from the number of turns ( and diameter)
No. of turns x circumference
will there be this sort of video for year 2 content and the options?
In time there will be
Please do a video on fields and thermal recap
thanks!
I do AQA physics and we learnt Kirchhoff's laws and was told it would be in the exams
what is AQA, I am a edexcel IAL student of AS(uni1, 2,3) i can use ur videos right?
What pens do you use?
Does the symbol you wrote at 21:11 mean anything because whilst its not the right one it looks familiar
It’s similar to an LED, but that would have the arrows pointing away from it.
Hi, is everything is your electricity playlist everything we need to know for our exams?
Yes
thanks chief
cant thank u enough bro
Just gonna add something, for the I-V characteristic graph for the diode, the line won’t starting going up from the origin because diodes have what’s called a threshold voltage meaning a current will only start flowing once the threshold voltage has been reached, for the diode shown in the video, this would be around 0.8 volts.
I’m only doing GCSE’s haha but I’m just a nerd, I don’t know if you actually need to know this for the A-Level but I thought I’d mention it anyway 👍
The blocks in grey at 11:29 are electrons (charges that are liberated)?
That’s right
Thank you!
Is there a edexcel one ???
what is load of battery?
VIDEO is worth it
hello sir, do you have any video for superposition?
Do you know if you get all the equations shown in this video in the exam?
You get most of them but there are a few you need to know.
filestore.aqa.org.uk/resources/physics/AQA-7408-SDB.PDF
I'm really struggling with a question it would be an awesome help if you could explain it please? it's unit 2 of physics AS Q5 January 2011 code 6PH02/01
Will this be useful for me if I do As physics but from cie board?
Yes it will
Hi I just wanted to ask if this is for year 1, or year 1 and 2
This is usually covered in Year 1.
22:06 can someone explain to me why there's no resistance when the pointer is at the left end? surely if it's at the other end the circuit bypasses the resistor and effectively avoids the resistance? i'm not correcting or anything, i'm sure it's right., but i just don't understand why 😔
The resistance is proportional to the length : R = (resistivity x length)/area . Therefore when l = 0, r = 0, such as there being no resistor. Therefore as V = IR, there is no voltage.
Would this be good for CIE even tho it's AQA?
check the spec and see if it has the same content
22:00
this vid was so helpful ty
:)) got my mocks in a few days and im finished cuz i keep playing fortnite
Why did I watch this 😭 I don't take physics a level I haven't done my gcse yet and I understood this😩😩
5:00
legend
It has been said!
First Physics Assessment in 7hrs 😭😭
This is for 9702 right?
Yep
Myy guyyyyy
Hey! your wonderful too, (00:03)
You sound like James Vowles
You missed out small things that are quite important such as the value a diode will produce current but overall it's good. I wouldn't rely on this video on it's own though.
think i found a legend
My goodness do I have a negative opinion of this topic
Nice pen
12:43 personal timestamp
Can you do an ocr A one please
Will do
Physics Online thank you so much your videos are so helpful keep up the good work :)
Be my teacher.
I'm your online teacher!
im definitely failing
Electricity ∝ eternal pain - and additionally,
Electricity = to 1/death (with the assumption that anything divided by death is negligible)
∴ Electricity = eternal pain and death
but nice vid either way
26:47 didnt age well haha
I love your content, but the pen goes through me so much. :( can’t watch :(