Charging by Conduction and Induction
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- เผยแพร่เมื่อ 1 มิ.ย. 2024
- Charging by Conduction and Induction are both demonstrated. Each individual step is clearly described. Electrical Ground is introduced and defined. Both demonstrations are illustrated. Want Lecture Notes? www.flippingphysics.com/condu... This is an AP Physics 1/JEE/NEET Topic.
0:00 The basics of an electroscope
0:43 Demonstrating Charging by Conduction
1:16 Charging the balloon
2:16 What happens when the balloon is near the electroscope?
3:30 What happens when the balloon touches the electroscope?
4:44 Understanding what electrical “ground” is.
6:38 Charging by Conduction with Illustrations
8:16 Demonstrating Charging by Induction
9:27 Grounding the electroscope while charging by induction
10:14 The electroscope is charged by induction
11:34 Charging by Induction with Illustrations
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#Induction #Conduction #Charging
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I honestly had a lot of trouble with this concept, however, rewinding multiple times, taking notes, and reading your lecture notes over and over again really helped! I honestly think it would be impossible for me to understand this without your explanation! Thank You!
Thanks
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Had some confusion between charging by induction and conduction learning here in India, Got all solved. Thanks U🙏
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Hi. Nice video. I have a question about charging the electroscope by induction.
Shouldn’t the electrons flow from the ground to the electroscope because you are touching the side accumulated with positive charges and by coulomb law, the distance between your finger and positive charge is smaller than the distance between your finger and balloon, hence the force of attraction is greater than repulsion.
Thanks a lot
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Disculpa amigo. De que material esta hecho ese corcho por donde se introduce el metal? He repetido ello con un matraz de pirex, un alambre de cobre y dos laminitas de aluminio, y cuando le acerco el globo, tambien un tubo de pvc practicamente las laminas no abren. Hay algun criterio en la eleccion del aislante entre el conductor metalico y el frasco de vidrio? Espero respuestas gracias.
For induction, in the demonstration you did, would it be the same if the object was positive, and make the electroscope negative? Would this still cause the leaves to repel?
Hello rubber is an insulator. How is it able to transfer electrical charges to the metal sphere?
from 12:04 , we see that the distance between metal foils starts to decrease before the finger even touches the ball, why does this happen?
Thanks a lot.although I’m not natively English your explanation helped me!
Wonderful!
Great
My professor could never.
but when baloon touches electroscope how much electrons were transfered by the baloon to the electroscope? Baloon remained negativly charged?
For induction, since there is a positive charge at the top of the electroscope and he touches the top of the electroscope, wouldn't he feed some electrons to the top of the electroscope, and then when he takes everything away, the electroscope is left with a net negative charge?
Thnx alot sir.... 🙏🙏🙏Am from India.... N a hpy new year to you...
You are very welcome!
If we keep the balloon touched to the electroscope longer, will the negative charge from the balloon all transfer to the electroscope? In other words, сan the balloon have no excess negative charge after the interaction (theoretically)?
No the electrons will distribute uniformly, there will always be more electrons in both as they will share that excess of electrons in a way they reach equilibrium which is both objects will have some of that excess, if the balloon became neutral this violates that the electrons try to reach an equilibrium as we observe in nature
10:00 when we grounded the electroscope, the electroscope didn't have any excess electrons to be transferred into the ground as charging via conduction Is just a change in the arrangement of protons and electrons in a matter. my question is, what exactly happened when we grounded the electroscope in this monment
Indeed there's no excess electrons in the electroscope but the electrons in it are pushed away by the balloon (as the electric force is a force at distance) to the ground
I didn't scored well in neet last year and didn't got a med college 😭 I hope I'll be able to do it again
Please tell me where you got or how you made the electroscope!
It was purchased a long time ago. Do not know from where.
It's called a "Flask Form Electroscope".
Confusion: Induction method- The metal ball has more positive charge when finger is brought near it; so why dont electrons flow from finger to the metal ball by attraction of the positive charge on the ball? Electrons coming up from foil to go to finger/ground are being repelled by the balloon so it should be hard for them to flow to the finger… why in both cases electrons flow to the finger?
ur rite
Electrons will prefer to go to ground instead of being crowded in the foils since they repel each other in such case
I have a doubt why doesn't the negative charge on the balloon get neutralized when u hold it but the electroscope does when u touch the ball
Pls reply awesome video love frm india
The rubber balloon is an insulator and the metal electroscope is a conductor.
The induction picture in the lecture notes seems off...
Sir, I have a doubt, please Reply....
When you rubbed the ballon , it got negatively charged....... BUT why did the Excess electrons did not flowed through your body and remained in the baloon🙄
It is because rubber is an insulator not a conductor. I discuss the differences in this video: www.flippingphysics.com/resistivity.html
Good question! I had the same one
Sir! can you tell me why when balloon is in your hand and your are grounded why balloon not immediately become neutral?
The balloon is not a conductor, so when he charges the balloon from a side, charges(electrons) don't move from that side to his hand(i.e. ground)
If the balloon was a conductor then he will use an insulating handle attached to the balloon to hold the it as he can't charge it if he holds it by his hand for the reason you mentioned in your question.
Can u explain permittivity of medium and relative permittivity
I explain that here: th-cam.com/video/m8ZWnK2U7xA/w-d-xo.html
@@FlippingPhysics Thanks a lot
I wonder, what would happen if the positively charged fur (1) came in contact with the electroscope and (2) came in the proximity of the electroscope wherein in both situations, the balloon is still present.
The electroscope foils always repel when the object coming next to it is charged no matter what's the sign of this charge
So in the case of the fur which is positively charged it will attract electrons to the top of the electroscope leaving the bottom with fewer electrons thus positively charged, then both foils will have the same positive charge and they'll repel as a result.
Electroscope just tells if there's a charge or not but does not tell its sign (positive or negative) as it behaves the same way in both cases
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what does the term ground mean in the video
It means the actual ground on which we stand.
When we touch a charged body to ground, our body acts as bridge between the two and electrons are exchanged between ground and body, that balances out the charge and makes the body neutral.
Here, the ground doesn't get charged because it's so vast and the very little number of electrons exchanged causes no net change in the charge of ground
Would it be possible to make the balloon neutrally charged once again?
By touching the area that has been charged with hands to ground it to make it neutral again
If electron flow through electroscope when touching ground then why it does not flow from charged ballon to ground?
Please anyone help me out !
t is because rubber is an insulator not a conductor. I discuss the differences in this video: www.flippingphysics.com/resistivity.html
what a god
sir, I have a little questions.
1) Can insulator conduct charge to another objects upon touching??? if it can, how???
2) Can insulator be charged by conduction??? if it can, how???
I try hard to find the answer but I can't find the exact answer.
Sorry for my bad grammar T-T
In my class, teacher say that if you attach the insolator that have charge to metal ball (conductor), nothing will happen. So, it make me very confused.# this is about question 1
The another question, can insulator that has charge be ground??? if it can, how???
Apparently if you touch an insulator that is charged with a conductor, the electrons flow from the insulator to the conductor as there are too many of them on the insulator
The insulator prevents electrons to flow to another insulator and not to another conductor.
That's what I know, there may be some better explanation
@@suparawichitkangosol7225👆
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is it possible to permanently give a metal surface a negative charge
Definitely if you charged a metal surface negatively it'll stay negatively charged unless an external factor changes this state
@oabdullae I know this the question is how to do it?
@@mohammadhashemi1771
If you kept the charged metal away any other charges then it will stay as it is, practically maybe you can't hold this forever all the way to infinity, but the idea is that it's possible to hold the charge of an object as long as we want by not letting it interact with other charges from outside
@oabdullae my setup requires and electrical current to pass through the metal at all time but the metal has to maintain the negative surface charge all the time
@@mohammadhashemi1771
Maybe you can cover the metal with an insulating layer to prevent it from losing its charge
good explanation
make the acting better tho
epic
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I'm also from india
I am hoping to be able to reach more JEE/NEET folks. So, Great!
Me too
A pith ball is an insulator; and a wall is an insulator.
If I rub a rubber rod with fur to make it negatively charged and touch the pith ball insulator, there is repulsion and the pith ball creates a physical distance to 'get away' from the rod - see time 1:40 here -> th-cam.com/video/ojcfJ7baa24/w-d-xo.html
If I rub a balloon with fur to make it negatively charged and touch it to the wall insulator, unlike the repulsion in the case above, the balloon is attracted and sticks to the insulator - the wall. See time 0:36 here -> th-cam.com/video/bjU-Ll6U1ig/w-d-xo.html
At first I thought "balloon attracts (sticks to) the insulator because the wall has a large volume for repelled electrons to move away from the negative charge on the balloon" and "the pith ball repels the insulator rubber rod because the pith ball is a small volume and its electrons cannot 'get away' from the electrons on the rod"
THEN I recognized "wait a minute - the wall is not a conductor - there are no conduction band electrons - in an insulator, charge stays in one place and cannot freely move as it otherwise could in a conductor"
So I'm a bit stumped. The atoms become polarized in an insulator when a negatively-charged object is brought near (negative rod, negative balloon) - just like the dielectric in a capacitor.
So the insulator wall attracts the negative balloon, but the insulator pith ball repels the negative rod.
Sort of puzzling.
حسبي الله عليج يا مس الفيزيا شهالمشروع المعقد الي تبينا نسويه كفايه ضغط ياخي
6:15 bebe
dito ka start nood, para maintindihan mo ung conduction