Conductors and Insulators | Physics | Khan Academy

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Charge can flow through some materials, but not others. Created by David SantoPietro.
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Опубликовано:

7 авг 2014

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Комментарии : 132

@slaskendasken 8 лет назад

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 лет назад

So true! I wish he was my professor

@mad-ti6xx 6 лет назад

You are right dude

@anilsain9697 5 лет назад

LP Chotu Motu

@sarahkaveh7739 3 года назад

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 месяца назад

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

@Buczy88 4 года назад

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

@naveensundar4765 4 года назад

auto tune

@user-rw8sq7jm8s Месяц назад

Gyat

@aimbotexe8145 2 года назад

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

@emzeemostlygaming3678 3 года назад

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

@GermaphobeMusic 3 года назад

10:43 when someone coughs in the testing room

@mikemendez9006 5 лет назад

By far the best simplest illustration of electrical conductivity.

@amnehabbas5453 3 года назад

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

@akshaynanjangud2283 7 лет назад

Excellent stuff, man!

@SneakyPeakyLeaky 7 месяцев назад

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

@susanbattaglia8140 9 лет назад

I really enjoyed this video, thanks a lot :D

@mdalamintalukder3824 6 лет назад

Sue Loves Cats

@aberronxo77 Год назад

thank you very much for this video. So useful

@goldieplayz8466 4 года назад

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

@jakarina2214 3 года назад

I love khanacadamy you guys are my guardian angels

@Limo_wreck 3 года назад

9:20 love the wireless charging tutorial

@xwhateva 4 года назад

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.

@stephanieemunemu784 4 года назад

You’re a God sent teacher 🥵🤲🏾

@SaraGarcia-jh2pp 3 года назад

*good

@fun_g Год назад

@@SaraGarcia-jh2pp huh-

@SuvuIC 2 года назад

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

@jaysant6958 4 месяца назад

My thoughts too.

@192ali1 11 месяцев назад

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

@mitalikapoor2406 5 лет назад

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

@trent7736 3 года назад

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

@shakadahutson285 3 года назад

@@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.

@voisign3000 3 года назад

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

@MrAmalthejus 6 лет назад

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?

@owenszehenrydavies 11 месяцев назад

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

@ronnies.3440 7 лет назад

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.

@jaivaldalal446 4 года назад

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

@jessrach143 8 лет назад

you are awesome!

@christianchavez1034 3 года назад

“Phew okay glad that that’s over” 😂

@fidaus540 3 года назад

Thank you

@Atsaky 5 лет назад

very good explanations

@breebroderick21 5 лет назад

simply and clearly explained, thank you.

@VoidHalo 10 лет назад

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.

@M7medKasem Год назад

that was dope

@verenmirpuri9866 4 года назад

Cool

@diyarmahmoud Год назад

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

@waqasmayo1023 4 года назад

Difference between shaped conductor and round conductor ?

@murugeshwarana2427 3 года назад

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 года назад

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?

@karimmahfouz7809 6 лет назад

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)??

@malemnganbi2792 6 лет назад

Good

@calemlinke5130 4 года назад

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?

@andersenssandersenss8979 2 года назад

Thanks

@fisikalectures597 4 года назад

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?

@jaivaldalal446 4 года назад

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

@ardrobles5160 5 лет назад

why conductor is a variable resistance?

@Peter-cl2hp Месяц назад

Baller intro

@abuzarov 6 лет назад

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?

@vedikaaggarwal2973 8 лет назад

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 лет назад

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.

@janeandjeff2758 7 лет назад

Thanks dude you help me get A for my test👍

@sharankumarthummala8337 8 лет назад

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

@theorangejuiceprogrammer9227 9 лет назад

Thank you so much!!! :)

@manmohansharma8331 2 года назад

i love your video i

@ahammadali9193 6 лет назад

good and interesting lecture

@exploreit591 7 лет назад

I got it

@jaivaldalal446 4 года назад

Plz turn on the comments for all ur videos

@roshanib123 7 лет назад

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

@sazandude9022 6 лет назад

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.

@jaivaldalal446 4 года назад

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

@sihamsuhail 5 лет назад

Thanks helped me for my exams

@SanjayRathorAIO 5 лет назад

What happen charge placed near a conductor

@Bronoulli 5 лет назад

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 лет назад

yes

@aeroboi2862 6 лет назад

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 5 лет назад

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 лет назад

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?

@qwambyBee 2 года назад

I use to go to khanacdmey

@EmpyreanLightASMR 5 месяцев назад

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

@gaynellsmith8851 2 года назад

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

@noorayesha7821 2 года назад

how long the Balloon will stuck there?

@mohamedsabry7155 8 лет назад

so does conductors have what behaves like a potential difference internally

@jaivaldalal446 4 года назад

Plzzz...... Solve my doubts

@gaynellsmith8851 2 года назад

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???

@jaivaldalal446 4 года назад

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 года назад

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.

@mercedesmalone973 9 лет назад

pretty cool

@gaynellsmith8851 2 года назад

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???

@164procar4 4 года назад

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??

@babroochavan2465 5 лет назад

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

@leekelly4574 11 месяцев назад

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

@EmpyreanLightASMR 5 месяцев назад

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

@isimerilova 8 лет назад

How ı can find in Russian this video

@WarriorAjk 8 лет назад

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

@duelwing01 9 лет назад

The slug sent me here

@SoulReviving786 5 лет назад

I wish if you was my teacher

@VedangKevlani 4 года назад

cadet kakar *were

@keshoresharma4993 5 лет назад

Is gum is a conductor or insulator

@gayaraaukwaththa9170 5 лет назад

Keshore Sharma Probably insulator :P

@cheesestickhathreturned6875 4 года назад

insulator. (Maybe) ._.

@dokyungsoo8320 7 лет назад

helom

@sandushi3572 5 лет назад

oh-

@AlbertBikeev 9 лет назад

"Yeah! Science, bitch!"

@AlbertBikeev 8 лет назад

victor fong humorless moron

@Victor-mx6vs 8 лет назад

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

@mgeorgescu 6 лет назад

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

@earth3557 4 года назад

Cat | Dog

@micahwright1578 3 года назад

Can we see a video of this confirmed experimentally?

@timbags3856 2 года назад

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

@allezondrataylor2382 5 лет назад

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

@user-rw8sq7jm8s Месяц назад

Gyat

@franceballon5921 4 года назад

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 3 года назад

What do you mean ?would you explain more?

@binhnguyenquoc3249 4 года назад

so the balloon is ceiling gang ? Cringe

@jhytes606 Год назад

this is so hot

@Super_Bowl_Bound_Eagles Год назад

wdym?

@princessdiannemamaril8342 4 месяца назад

2024👇🏻

@floofybons2775 4 месяца назад

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?!

@NewHorizons19 6 лет назад

Justin Roiland?

@film3516 3 года назад

Men i was learning from wrong teacher this whole time

@Moe-rq8vt 5 лет назад

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

@classywithabite 6 лет назад

booooooooooooooooooooooooooooooooooooooooooooooooooooo

@classywithabite 6 лет назад

i agre boooooooooooooooooooooooo

@gayaraaukwaththa9170 5 лет назад

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

@ShabazzTBL Год назад

“You know what you do with it.” 😂

@yeinchung438 5 лет назад

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

@tusharjha5539 5 лет назад

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