Sharpie should really sponsor this man

@namename3130

2 жыл бұрын

Idk... it might be a bit of an anti-advert - the pen never seems that good in these videos.

@justaracoonchillinginatoilet69

Жыл бұрын

@@namename3130 he uses yhem so much the ink dries out so looks faded which shows his intense undying love for sharpies

@catneil5755

6 ай бұрын

🤣

Please ignore my comment about energy being 1/2QV due to resistance - nonsense!

@Annie-xb8xx

4 жыл бұрын

Wait so what is the correct reason then? Why is it 1/2QV not QV? And why is it the area under the graph not just the charge at that point multiplied by the potential difference at that point?

@Annie-xb8xx

4 жыл бұрын

Sorry if the answer is really obvious, we haven't been taught capacitance yet.

@Player-zq3pe

4 жыл бұрын

@@Annie-xb8xx It's probably derived using differentiation.

@joshuaosei5628

4 жыл бұрын

It's because of the fact that the original E = QV assumes charge and voltage are constant, but they are not. Obviously to charge up a capacitor, you would need to have started at 0 and then increase as you supply it with voltage. It's the average.

@Quiyum

3 жыл бұрын

Brain : No , that's the only thing I am gonna retain

Good luck for everybody sitting A level Physics in 9 days time :)))

@haatib42

5 жыл бұрын

Gonna need it

@adamgibson8295

5 жыл бұрын

@Matthew Briggs it did the one about a about parallel plates, wtf

@saifmohamed9642

4 жыл бұрын

12 hours*

@a5hh

3 жыл бұрын

thank you brian chan

@lennynganga4361

3 жыл бұрын

How about 2hours?

8 days till my physics paper 2 and even though this topic isn't in the advance info watching this video made me feel extra prepared for the curveball I know is gonna come. thanks

@ScienceShorts

2 жыл бұрын

It's deffo going to be in multiple choice.

@puddleduck1405

Жыл бұрын

we get advance info before exams?? damn I didnt know that. is this for all exam boards? (I do AQA)

@00f169

Жыл бұрын

@@puddleduck1405 This was for last year's students. We won't get any this year. Apparently the advance information for last year didn't help too much anyways.

noticed most of these top comments are years old, just wanted to say there is new blood coming here too! These videos will never stop helping years of under taught kids

One of the best videos I’ve seen on capacitance

Thank you so much for the video! I struggled with it a lot but now it is as clear as it can be!

I always appreciate that you explain things differently so I can have 2 sets of notes on the same topic :)))

Hey man thanks for that vid! You just explained how to derive those formulas so much more simply than my lectures do

bro where would we all be without you? I started to get so demotivated because my teacher teaches solely through equations with no derivations or real explanations. It's been bugging me so much why half of the energy was just disregarded but now I get it. Thanks so much!

your video has being extremly helpful to me,thx man appreciate the hard word and the effort you put in your video

Hey I stumbled upon your videos and though that they were actually better than my physics teacher. And I was wondering if you were thinking about making a website with all your videos where you could for example accept donations like the examsolutions guy does so that at least you can get a little extra for your incredible effort. Also just wanna thank you for your videos P.S. I'm on my last year pleaseee go ham on the uploads I need them!!!

@ScienceShorts

6 жыл бұрын

+themexican sob Thanks man! No, I don't have a website, but feel free to watch the adverts all the way through to give me an extra few pennies! :)

@hasnaiqbal2870

5 жыл бұрын

@@ScienceShorts I won't skip ad in your videos hereafter!!! =D

@gblawrence034

4 жыл бұрын

@@ScienceShorts better yet, click on the ads, cause its the clicks that give the money

@nawfaljafri

2 жыл бұрын

@@tychophotiou6962 yes

Thank you so much, I always struggle with this type of topic and this video was a big help!

After seeing a lot of other videos about the same subject i got simply truly totally astonished by the different point of views used to explain it ! As i always say, there's never complete understanding if you can't describe things in different ways

Thank you so much for these videos. Prepping for my exam Friday!

@bBenzopyrrole

8 ай бұрын

same bro (2023 ver.)

Brilliantly explained, thank you!

Really nice work!

man this is really helpful

Boys we got just over 1 day, best of luck

@hi44098

5 жыл бұрын

I am dead 2morrow

@zeyn4792

5 жыл бұрын

@@hi44098 na don't worry man, get the easy marks with thermal and nuclear. Get like 13/25 on the multiple choice and answer the wordy questions, bound to get a few points right, decent mark right there. All the best

@danielb1500

5 жыл бұрын

Zeyn which exam board are you

@hi44098

5 жыл бұрын

@@zeyn4792 hehe i will try. Best of luck man. I will come here tomorrow afternoon to complain about my faliure lol

@zeyn4792

5 жыл бұрын

@@danielb1500 AQA, bit shitty they pushed the exams into may rather than june as it always has been

You, sir, are excellent. I think making your videos accessible through payments will only make the channel less favourable. I think your videos so far are of brilliant quality and the fact that they don't require us to pay, makes it so much better.

@ScienceShorts

6 жыл бұрын

+Burry21 Thanks! Yes, I wouldn't have wanted to pay when I was doing my A-levels, so I don't make anybody pay. Please feel free to donate enough to buy me a cup of tea to keep making videos though! ;)

@attedau6235

5 жыл бұрын

@@ScienceShorts how can i donate to you

@chinmayvashishtha

5 жыл бұрын

@@attedau6235 link in description

if I get an A in physics I owe you a pint

@CHEESYhairyGASH

5 жыл бұрын

How did you do?

@CHEESYhairyGASH

5 жыл бұрын

?

@aidenwinter1117

5 жыл бұрын

Relationship questions you missed the word “if” at the beginning of the comment.

@cornellius702

5 жыл бұрын

Relationship questions yikes

@johnpaul4301

5 жыл бұрын

He is not replying he probably failed with flying colours

Thank you for the video. By the way, I think the most common way to denote the time constant is using tau.

Thank you, very helpful!

THANK YOU FOR THE AMAZING CONTENT!

Lesgoooo, in'sha'Allah gonna get an a*

Would you be able to do one for lenses, particularly ray diagrams? Thank you

In 15 min this guys literally explained what my teacher couldn't explain in 2 weeks.

here for last minute revision

When you increase distance between the plates whilst a battery is connected, you're still putting work so would the energy increase slightly but resultantly decrease?

life saver !!

That’s a hell of a video

LOVE IT

AMAZING

Your videos are very good!

FINALLY UNDERSTOOD IT! THANK YOU!

Can you please make a video on graphs related to magnetic flux in a transformer and hall probe?!

you are better than my teacher jeez

Very helpful. thank you.

@thesorewinner2418

6 жыл бұрын

so, we meet again

at 2:00 you make the switch which is open it doesn't mean the electrons cant flow back to the +side of the capacitor?

Why does the current decrease exponentially as the capacitor gets charged and discharged could you please elaborate that? Would be a great help TIA.

l watched your video, also I made some electronic using proteus 8, thanks.

7:20 I honestly don't know what I'm talking about but what about a superconducting circuit. I wonder whether energy stored would increase to near QV

@liamfinley723

2 жыл бұрын

That’s what I was thinking

@bamgb8811

Жыл бұрын

I assume that because superconductors repel magnetic feilds, the capacitor would just act as a break in the circuit. Because the magnetic repulsion from the negative plate won’t be able to repel the electrons from the positively charged plate meaning there would be no current in that half of the circuit and the other half would be a dead end

love your videos but ive got a question :why does the capacitor discharge slowly in the rectified ac current

@ScienceShorts

5 жыл бұрын

Because it is discharged through a resistor, different from charging.

Can you make a video on forces exerted by pistons please?(By the way love your videos)

13:30 nice voice over :0

@ScienceShorts

5 жыл бұрын

Seamless ADR

ty dud

In a certain question, it required to find area under the exponential graph of current/time .. how can I calculate this?

@jayantkalyan9215

5 жыл бұрын

intergrate the function

These videos are great!!! - can you do some on OCR A-level chemistry if thats possible :) Thanks

Hi I was just wondering at the end why is charge constant when the battery is disconnected? Is that assuming the the charge of the plates has got maximum charge /capacitance?

@ScienceShorts

2 жыл бұрын

If the capacitor is disconnected, where could the charge go?

BEST VIDEOS EVER

Lads good luck for the final exam

Can you explain safe pd?

Where did the equation E=0.5Q/C² COME FROM

*Dialectric* i love this!

@ScienceShorts

4 жыл бұрын

I always make that mistake! 🙄

@minecraftdecoded

4 жыл бұрын

@@ScienceShorts you make the mistake of replying after 3 months😂😂😂😂😂😂 JK!

where does the equation at 14:22 come from?

@ThePS3Beast109

6 жыл бұрын

rearrange the earlier Q=VC for V=Q/C, put it in E=0.5xQV to get E=0.5xQx(Q/C), which is the same as E=0.5xQ^2/C

U legend

0:23 why does the battery take electrons from one plate to the other?

@hoodedvenom3987

3 жыл бұрын

One side has electrons (negative charge) the other side has a lack of electrons (positive charge). The electrons are attracted to the positive plate as it's oppositely charged and therefore flow towards it.

i lov3 you so much it hurts

The AQA spec says you need to be able to describe the action of a simple polar molecule that rotates in the presence of an electric field. I'm not sure what this means and I don't think this video covered it?

@instahswap

6 жыл бұрын

I just revised this, so I can give you a brief description. Basically, the particles in a dialectric are called polar molecules, which means they have a positive and a negative end. Normally, these particles are jumbled up and facing in random directions, but when charge is created across the capacitor around them, an electric field is created. As you know, each side of the capacitor has an opposing charge, so each of the particles in the dialectric orientates themself, so that the positive end faces the negative end and vice versa. When this happens, each one of these particles has an electric field as they themselves have a difference in charge by virtue of being orientated, but because they're facing in the opposite direction to the capacitors electric field, it's an opposing electric field, which causes the overall electric field to decrease - this means that a lower voltage is needed to charge the capacitor, which in turn increases the capacitance through C = Q/V (i.e. as V decreases, C increases). Hope I was of help :)

@jerrysmith5281

6 жыл бұрын

Thanks! It's something that wasn't covered by my teacher so I was a bit confused when reviewing the specification

why does current decrease when capacitor discharges

@gabriellaashong

5 жыл бұрын

Muhammad. Husnain the charge moves to the positive plate. The charge moving to the positive plate decreases as time increases and as I=q/t, the current will decrease as a result. I hope that helps

Professor I thought the energy is half because it doesn't start with q and v, but dq and dv? Like the calculus?

@ayoutubechannelname

5 жыл бұрын

You're right.

@Annie-xb8xx

4 жыл бұрын

can someone explain this to me? what does d mean?

Please post explanation of CIE syllabus Chapter 25 - Electronics Seems like you've missed it. I'm really struggling in it and need help in amplifiers and sensing devices.

@hasnaiqbal2870

5 жыл бұрын

same. did you find any other videos on it?

Capacitors are the most interesting things in the world to me idk why

He sounds like Thor (Chris Hemsworth) but with a thinner voice

@ScienceShorts

2 жыл бұрын

Thinner?!

@ouropinionsmatter9898

2 жыл бұрын

@@ScienceShorts Thor's voice, is the same as yours but a little thicker. I mean the accent, the speaking style sounds almost the same but his voice is a little lower pitched than yours you could say... anyways, I'm just glad I got a reply from you... unreal moment for me

@ScienceShorts

2 жыл бұрын

I can put it on like he does if that's what you want 😂

@ouropinionsmatter9898

2 жыл бұрын

😂😂😂😂

why does current reduce when a capacitor charges?

@ScienceShorts

3 жыл бұрын

Cuz it gets full...

Why does disconnecting the battery create a constant charge? I don't know if you still reply on these older videos

@ScienceShorts

2 жыл бұрын

Because where would the charge go?

Does this topic come in edexcel A level physics? My edexcel cgp revision guide doesnt cover capacitors.

@ScienceShorts

Жыл бұрын

No, it's not in Edexcel.

@Fran-hu2gw

Жыл бұрын

@@ScienceShorts It is. It is in the electric and magnetic fields section of Edexcel.

At 10:27 did you PUT ln accidentally or SAY log accidentally because I'm a bit confused ..

@ScienceShorts

6 жыл бұрын

+Kaumudie Athukorale saying "log" is correct for both natural log (ln or "lun") as well as log (base 10)

@kaumudieathukorale1255

6 жыл бұрын

Ahh, thanks

Using the equation Q=Q0e^-t/RC, if the capacitor is initially uncharged i.e Q0 = 0, then surely the equation doesn't work, as for all values of t, Q will be 0. Can somebody please explain this?

@BO2Letsplay

5 жыл бұрын

Charging and pd follow the equation Q = Q0 (1-e^-t/RC)

@Annie-xb8xx

4 жыл бұрын

can someone explain to me what e is

@hoodedvenom3987

3 жыл бұрын

Q0 is max charge- Q is the charge at a given time. When t=0, Q=Q0(1-e^-0/RC), Q=Q0(1-1), Q=Q0x0=0

At 1:56 the circuit is not complete and glow the bulb

What happened at 13:33? 🤔

@ScienceShorts

4 жыл бұрын

I said less accidentally 🙄

8:38

@ThePS3Beast109

6 жыл бұрын

god dammit

Can you please do a video on kinematics graph questions for as levels

rip 2020 seniors

@khairi7508

3 жыл бұрын

;-;

Love your videos but i hate the sound of sharpie! Can you find different pens?

@ScienceShorts

3 жыл бұрын

😂

Without u I’d fail my a levels

Teach slowly , informative video

Hi Sir, please skip to 13:33 I think you had some editing issues. But dont take video down as I got my exam in 2 weeks. after that then feel free.

@JamesWilson-ui1wg

5 жыл бұрын

Aditya Misra Obviously he has made a mistake on his initial audio and has corrected it with a voice over instead of redoing that section. It does sound a bit weird but it gets the point across fine. 👍🏼

my man sound like the rightful king of asgard..

Re upload ?

Mr j day?

We don't have capacitance in GCSE But we do have it in A2

@inzayn1d

2 жыл бұрын

edexcel IAL?

13:33

13:33 Greater than XD

@ScienceShorts

6 ай бұрын

👀

Im so fucked

Decent

if i draw this 3d proceed to draw a 3d image

6:56 to 7:27 Nope. The slower a capacitor is charged, the less energy is wasted. The one half factor is in there because each additional charge increases the amount of work needed to add subsequent charge, for an average work per charge of V_f/2 (assuming linearity). Meanwhile, energy loss can be modeled as a function of ESR or Equivalent Series Resistance, which is not at all directly related to the Capacitance. By charging the capacitor slowly, you keep the voltage drop IR due to resistance R low relative to the voltage of the capacitor, allowing most of the energy to be stored in the capacitor rather than wasted in the resistance.

@ScienceShorts

5 жыл бұрын

Lol.

@ayoutubechannelname

5 жыл бұрын

If you apply *constant* voltage V to a capacitor C with equivalent series resistance R, then half of the energy gets dissipated in the resistance and the other half of the energy gets stored in the capacitance. Why: For a *constant* voltage, you can represent the total input energy as simply the product of voltage V and charge Q, which on an x-y chart looks like a rectangle, where the height of the rectangle is the applied voltage (V) and the width of the rectangle is maximum charge stored on the capacitor (Q=C*V). The voltage on a capacitor is typically proportional to Q (i.e. C is typically constant). So the energy stored in the capacitor increases simply with the square of the voltage, and this energy stored can be represented by the lower-right diagonal half of the rectangle with "area" (1/2)V*Q (where Q = C*V). The upper-left diagonal half of the rectangle represents the Joule heat loss incurred as the capacitor was being charged. So: If you apply a *non-constant* voltage in such a way that it is maintained only slightly above the voltage of the capacitor, up until the desired voltage is reached, then you can minimize the amount of energy you lose when charging the capacitor. In such a case, the area of representing the input energy would no longer be as simple as a rectangle with uniform height because the initial applied voltage would need to be lower than the final applied voltage. This cuts away from the "upper-left diagonal half of the rectangle" which "represents the Joule heat loss incurred as the capacitor was being charged".

@rafaellopes2053

5 жыл бұрын

@@ScienceShorts absolute legend

physics 4 in 17 days...

I don't think you can state "Charge stored". Only energy is stored .The net charge in a capacitor is zero.

@ScienceShorts

6 жыл бұрын

Splitting hairs. That's the same as saying it's wrong to say that a hydroelectric dam stores water.

Fundamental error in this video.....time constant is "RC" NOT 1/RC!!!!!

@Annie-xb8xx

4 жыл бұрын

isnt that what he said?

Sir a little bit confusing

Edexcel peeps sitting for unit 4 tmr, where you @

Helpful but youre going to fast

@5.00 I think you mean CHARGE stored per unit potential difference, not 'charged' XD

@ScienceShorts

6 жыл бұрын

:'(

@chinmayvashishtha

5 жыл бұрын

damn that's harsh checking

bro where would we all be without you? I started to get so demotivated because my teacher teaches solely through equations with no derivations or real explanations. It's been bugging me so much why half of the energy was just disregarded but now I get it. Thanks so much!

@shifatshelby9859

5 ай бұрын

where are u now ? (just curious)