Man, your explanations are so on point, next level even. It's funny and interesting to watch, and you explain in a way that is very easy to understand. Thanks for the great job everyone of you in Khan Academy are doing!

@menacedemort2878

7 жыл бұрын

So true! I wish he was my professor

@mad-ti6xx

6 жыл бұрын

You are right dude

@anilsain9697

5 жыл бұрын

LP Chotu Motu

@sarahkaveh7739

4 жыл бұрын

Hey i got a question in 4:43 he says the electrons are stuck there in the insulator .actually where does he exactly explain why? I mean why these extra charges we added can not move??what stops them

@jasminemasown

4 ай бұрын

​@@sarahkaveh7739 The energy gap. In insulators, the electrons do not have the energy to be able to move freely, while in conductors they do

10:40 *brings charged rod close to the not charged one* electrons: AIGHT IMMA HEAD OUT

@naveensundar4765

4 жыл бұрын

auto tune

@user-rw8sq7jm8s

Ай бұрын

Gyat

Thank you so much I couldn't have passed science without you

10:43 when someone coughs in the testing room

"if you took a huge metal pipe and stuck it in the ground, that would count" Im litterally a nerd for laughing damn

By far the best simplest illustration of electrical conductivity.

I truly understood everything I'm really thankful for you 💞💞💞

I really enjoyed this video, thanks a lot :D

@mdalamintalukder3824

6 жыл бұрын

Sue Loves Cats

Excellent stuff, man!

Very well explained, helped me a lot with my online school! : D

You’re a God sent teacher 🥵🤲🏾

@SaraGarcia-jh2pp

4 жыл бұрын

*good

@fun_g

Жыл бұрын

@@SaraGarcia-jh2pp huh-

Enjoyed! - From the old years Let's make cool videos instead of using old ones! BLEHHHHH! - 2020

This is literally one of the perfectly explained videos I've ever seen. (what they don't teach you at school)

@trent7736

4 жыл бұрын

Idk what school you went to, but they definitely taught this in school

@shakadahutson285

3 жыл бұрын

@@trent7736 lol yeah I'm doing this for a test tomorrow. She probably meant that in her school it may not be as thorough or easy to understand.

thank you very much for this video. So useful

I love khanacadamy you guys are my guardian angels

Pretty good explanations but don't feel bad if you tend to get a bit confused because David keeps switching between different definitions for things. i.e. when discussing negative charge he starts using electrons interchangeably when an electron is NOT a negative charge, an electrical is a particle that HAS the property of charge that is negative.

“Phew okay glad that that’s over” 😂

9:20 love the wireless charging tutorial

Plz make a video about how a battery creates a potential difference. Make video and plzzzzz teach in detail because I love to know about all these things

you are awesome!

Excellent Lecture. Thank you. Question? Vacuum is an insulator, correct? Then how come a beam of electrons were moving from anode to cathode in the vacuum tube of the JJ Tomson experiment? Thank you

Even in insulators if you add negatives charges, they get added to the conduction band where they can move around, since when solids form the bands fuse together to form a CONTINUOUS conduction band, right?

What happens when you rub two initially neutral charge conductors together? Both conductors are disks. My thought is since conductors allow electrons to move easily throughout, the process of frictional charging will move the electrons from one disk to the other. Thus, leaving one disk(A.) positively charged and the other disk(B.) negatively charged.

do you think you could make a video about how a battery works plz?

very good explanations

10:44 “Let me get the heck out of here” 😂😂😂

Insulators can be negatively charged by adding electrons. The electrons then will be stuck. But how can insulators be positively charged if The atoms ( electrons and protons ) are bound together ( I mean they can't lose electrons)??

why excess charge will remain at the initial location of charging in insulators?

simply and clearly explained, thank you.

At 6:10 The negative charges just move to the edges only due to escape repulsion but if more negative charges are added to the conductor, won't the negative charges on the edges be closer enough to repel eachother?

@marjaan2657

2 жыл бұрын

Even if the amount of charge increases, they'll still repel and be closer than what was in the video since there's more charge. Is that what you were referring to?

Thank you

Difference between shaped conductor and round conductor ?

that was dope

10:45 we stated earlier that the electrons in the insulator couldn't move freely, but now they can all just leave???

@jaysant6958

4 ай бұрын

My thoughts too.

so if you use insulators to cause charge in a superconductor... how do you do it? might be done by whirling something around in a cyclone, or whirlwind... could be like a dryer in effect... point is; what are we willing to try?

Why is it that the current in the circuit remains unchanged if we keep a resistor in it

Cool

why conductor is a variable resistance?

Good

Thanks dude you help me get A for my test👍

extra charge on insulator is stationary. But when we add electrons , there must be repulsions and attractions then why the charge is stationary

@nsai3757

5 жыл бұрын

it is due to the electrons don't have energy levels to jump off from one atom to another atom, this property is seen in materials and this material is called INSULATORS!!! and even inside or outside if anyone add electrons , they'll stick there , if there is net/unbalanced force is happening , naturally polarization happens and takes care of it.

Thank you so much!!! :)

Why would added electrons be stuck in one place in the insulator? It doesn't seem obvious. They are not bound to any atom, why wouldn't they roam?

Why don't the electrons repel each other in an insulator?

@sazandude9022

6 жыл бұрын

They get fixed in a postion in which they can be comfortable... Yea they repel each other and try there best to be away and the sit in a position but can't jump off as they are fixed in a place as the video explains.

Plz turn on the comments for all ur videos

good and interesting lecture

Baller intro

I got it

Why the transfer of electrons takes place from our hair to balloon and not from balloon to hair when we rub the balloon with hair

if the electrons are flown from conductors why are they not getting a +ve charge

Thanks helped me for my exams

Not that I'm complaining really, I think this was a great video, but what does this have to do with medicine? Seems kind of off topic given the subject material of this channel.

Thanks

QUESTION(pls answer) Sir, I wanted to know why are conductors charged only on the surface and not on the inside . So, is the answer because the free electrons escape and accumulate at the edges and on the surfaces? Am I correct? If not, please explain me.

@ExplainIttoMe_1

6 жыл бұрын

Akashdeep Singh When excess charge is placed on a conductor, they will repel each other. Because charges are free to move on a conductor, they move to get as far apart as possible, which is the surface of the object. Hope that helps.

@osamaanees8406

5 жыл бұрын

Charged means more amount of electrons then proton or more proton then electrons. Inside a conductor there is an equal amount of electrons and protons something more electrons. When we will add more electrons those new added electrons will not be able to go inside the atom and the older electrons will push the new ones to the far edges of the object thus creating more electrons on that side then protons. PS wasy bahi ki angrazy kesi lagi?

i love your video i

One question: if you didn't cut the connecting wire to the ground, then would the charges on the conductor still redistribute themselves? If so, am I correct to assume that then electrons would move from the ground to the conductor to neutralise its charge and be grounded again?

Why a bulb does not glow if one end through which electrons can reach the bulb is connected to the battery and not the other??? Because in this case also, electrons can move to the bulb and provide their energy to the bulb

@kumargaurav1772

4 жыл бұрын

Because the electrons are happy inside the battery and don't wanna leave. In scientific terms, there is no potential difference. If you can, there is also emf. The electrons move inside the battery from negative terminal to the positive terminal, they don't just sit there doing nothing. When wire is connected, it provides an alternate and easier path for them to reach the +ve terminal. But if you connect only one end, there is no alternate path. So electrons don't move. Edit: I think i should have just said, "Because there is no +ve charge attracting them", nvm.

What happen charge placed near a conductor

At 1:00 when you said that the “positively charged nucleus is fixed,” is that where the ‘bound’ charge comes into play? -Inb4 Studying for my final which is 8 hours away

@ziraksajjad3619

5 жыл бұрын

yes

Plzzz...... Solve my doubts

so does conductors have what behaves like a potential difference internally

Is gum is a conductor or insulator

@gayaraaukwaththa9170

5 жыл бұрын

Keshore Sharma Probably insulator :P

@cheesestickhathreturned6875

4 жыл бұрын

insulator. (Maybe) ._.

How ı can find in Russian this video

@WarriorAjk

8 жыл бұрын

+Meri Kanatbekova ti edeeoch "settings" posle edeeoch "substitles". Yah dumayuu ti cmotret ruskii tam. Ee ezvinee za moyah plokha ruskii xD!

I wish if you was my teacher

@VedangKevlani

4 жыл бұрын

cadet kakar *were

I have a gold bracelet and a gold necklace that is conducting electricity, what is the best insulator to stop them from conducting???

how long the Balloon will stuck there?

pretty cool

I use to go to khanacdmey

I'm pretending Nate Bargatze is the one teaching me physics.

The slug sent me here

what if we keep grounding these electrons from the inducted rod?? In some point don`t we "finish" all these electrons? How many electrons in a conductor can be released??

I have a gold necklace and a gold bracelet that is conducting electricity, what kind of insulator do I use to stop the conducting in them???

"I'm gonna get the heck out of here" - electron

@EmpyreanLightASMR

6 ай бұрын

11:33 "whew, glad that's over"

for insulator, if some extra -ve charge applied cant they repel each other, as to how it is happening in case of a conductor.

I have a gold bracelet and a gold necklace that is conducting electricity, what kind of insulator do I use to stop them from conducting???

helom

@sandushi3572

5 жыл бұрын

oh-

"Yeah! Science, bitch!"

@AlbertBikeev

8 жыл бұрын

victor fong humorless moron

@Victor-mx6vs

8 жыл бұрын

Humor...jaja. Do you consider yourself "funny" when you say "science Bitch"

@mgeorgescu

6 жыл бұрын

It's actually a reference to Breaking Bad... the most awesome series ever! You wouldn't know....you would call others assholes.

Can we see a video of this confirmed experimentally?

@timbags3856

3 жыл бұрын

U won't be able to see electrons physically So this vid is enough

Cat | Dog

Is air-dry clay conductive?? Or stoneware clay?

Gyat

this is so hot

@Super_Bowl_Bound_Eagles

Жыл бұрын

wdym?

Justin Roiland?

so the balloon is ceiling gang ? Cringe

It's a horrible explanation when you get into the macro-level in terms of the structure of the specific material or the atoms itself.

@sarahkaveh7739

4 жыл бұрын

What do you mean ?would you explain more?

2024👇🏻

@floofybons2775

5 ай бұрын

Gurl this was sent 46 minutes ago and why are you awake at 3 am cus I went to the bathroom and got bored and decided to study cus of an exam but why?WHY ARE YOU AWAKE?!

Men i was learning from wrong teacher this whole time

booooooooooooooooooooooooooooooooooooooooooooooooooooo

@classywithabite

6 жыл бұрын

i agre boooooooooooooooooooooooo

@gayaraaukwaththa9170

5 жыл бұрын

????????? I can’t believe haters exist IN SCIENCE VIDS. Like, just study for your finals, alright?

everything he said was the opposite! For your own sake, watch other videos!

“You know what you do with it.” 😂

Can metal be an insulator and a non-metal substance be conductor??

@tusharjha5539

5 жыл бұрын

Metals cannot be insulators but non metals can, such as graphite which is bonded up with carbon atoms and due to a delocalized electron, it can conduct electricity