Electric Charge, Law of Charges, and Quantization of Charge

[@catharperfect7036]

Some of the best teaching I've ever seen, hands down.

[@FlippingPhysics]

Thanks for the love!

[@nunopires2106]

These are great, smart and entertaining at the same time. Thanks!

[@mohammedhayath4627]

I too enjoyed learning with you. Thank you

[@FlippingPhysics]

You are absolutely welcome.

[@karendavis8262]

Love your videos, I use them all the time in my physics class.

[@FlippingPhysics]

Glad you like them!

[@sofiaabadiko]

werido

[@eghitdegreehugrhurricane]

I love your courses because you not just answer those things on the book we repeat every day. In the end of this video you asked a question what is charge. Im very content with your explanation and I think we should be more curious about what these things essentially are instead of just learning some concepts from the books. Thank you for making realize why I need to learn Physics.

[@FlippingPhysics]

What a wonderful comment. Thanks!

[@borisbukalov9407]

Another great lesson. Just one comment. I used to tell my students the same thing. There is nothing special about "positive" and "negative". They are the names Benjamin Franklin picked. Then it occurred to me that calling them anything else makes it much harder to understand the law of conservation of charge. After all "strange" + "charmed" isn't equal to zero, while "positive" + "negative" is.

[@PasajeroDelToro]

Interesting you mentioned Ben Franklin. One type of charge unit (in c.g.s-esu/ gaussian units) is the StatC , aka "the Franklin". See my comment above for links and more info.

[@shyamdas6231]

I discovered your channel during the COVID-19 pandemic. Love it!

[@meme12389]

You make it so easy to understand. THank you very much!!!!!

[@artivishnoi474]

I am watching it from India. He is really a good teacher.

[@khadijaabbas5781]

I am impressed with your way of teaching 💗

[@affyne]

damn, after watching idk how many videos i finally understood what charge actually is. thanks to the discussion made at 12:05 Thank you!

[@FlippingPhysics]

That's great. I added that last portion of the video was an addition after I had originally published the video. Glad I added it!

[@MRSsamadi]

i have ad block installed but i turn it off JUST FOR UR VIDEOS. GET THAT AD COIN , KING

[@FlippingPhysics]

That is kind of you

[@WarriorBane]

Starting physics 2 in a month these videos will be great to visualize concepts that can seem abstract thanks

[@FlippingPhysics]

Best of luck!

[@mastikitrain2844]

Oh my God this was seriously such a great lesson, Thank you sir.

[@karankadam9373]

Best explaination I found 👍👍👍

[@rememberme8632]

Just three words for you amazing amazing AMAZING

[@FlippingPhysics]

🙏 🙏 🙏

[@keshavagrawal7971]

Perfect explanation 👍

[@FlippingPhysics]

Glad you think so!

[@dienfabriceestigoy6199]

thank you. big help. please continue what you’re doing

[@CoVeR-_-101-C]

Thank you so much~~~~You are my savior.

[@albertyeung5787]

Please add a folder under electricity or something you like in the playlist to include these newly added video clips, thanks

[@creativejay-db7261]

I enjoy learning from you ♥️

[@lightuponlight5215]

Wallahi I love you brother, much much much much much respect

[@brentlackey8316]

How are you deciding which direction the electrons flow?

[@abdulbari2653]

Great lesson, this helped alot. Just a little error, the SI unit of mass is the kg. Thanks anyways the lesson was marvellous.

[@FlippingPhysics]

You are correct that an SI unit of mass is the kg. Another SI unit of mass is the gram. The _base_ SI unit for mass is the kg; I do not refer to grams as the _base_ SI unit for mass. Glad you enjoyed the lesson.

[@abdulbari2653]

@@FlippingPhysics Thanks again

[@PRESIDENT0991]

Nice explanation.

[@llennzo]

this is so entertaining for some reason

[@User-bq9qz]

what's a quark?

[@lukeauslender6494]

This may be a relatively silly question... Why does the hair repel itself after the balloon is pulled away, but not naturally repel itself? Google says untreated hair has a negative net charge. If this is the case, why inst it repelling?

[@kamranshabeer1157]

Thanks sir ....there are lots of things I was confused to understand,now that are clear.....but there is one question in my mind how to compare 1C to 1e....

[@carultch]

The Coulomb was established before we discovered the subatomic particles. A giant unit of charge, about 10 micromoles of electrons. Sounds small, but since most things are close to neutral, it is a huge amount of charge. Most static electricity experiments with household objects, will involve µC or nC.

[@lorenzo0008]

but the fact that protons are positively charged and electrons negatively charged is a convention right? You could give positive charge to electrons and negative to protons ... right?

[@FlippingPhysics]

Yes. That is correct.

[@carultch]

Yes. In concept, some alien species who also understands charges and also has a concept of positive and negative numbers, could've just as easily called the electron positive and the proton negative. It is completely arbitrary that we call the electron negative and the proton positive, and this is an artifact of history that was set prior to discovering the electron and proton.

[@Raage.]

Thank you so much for this. Will you also do videos on electric fields,potential and capactitance?

[@FlippingPhysics]

Yes, however, it is going to be quite a while before I get to those topics. For now, you can find my in-class lectures about those here: www.flippingphysics.com/ap-physics-c.html (scroll down quite a bit)

[@jacomecalmei]

I have a question. Rubbing fur (rough object) to a rod gives the rod a negative charge while rubbing silk (smooth object) to a glass rod gives the rod a positive charge. I don't quite understand how these interaction works. The first rod could be rough or smooth and like technically rubbing the rod with cloth has the same results with rubbing the cloth with rod. How come rubbing the glass rod to silk is positively charge and not negative? Is there an explanation on this? I am still quite confused XD Thank you in advance!

[@jacomecalmei]

I am sorry here's like a better question uhhh why do the electrons move from the glass to the silk and not also from silk to glass, just like the interaction between rubber rod and fur? Why does this happens?

[@carultch]

@@jacomecalmei It has to do with a property called electron affinity, and how energy intensive it is for a certain substance to accept surplus electrons, or a deficit of electrons. When glass is rubbed with silk, electrons flowing from the glass to the silk will reduce the energy of the system, because it is less energy intensive in this combination for the silk to gain a surplus of electrons, and for the glass to lose electrons and end up with a deficit. There is a ranking of materials known as the triboelectric series that keeps track of which way electrons would flow, given a pair of interacting materials that are initially neutral.

[@radinelaj-c7s]

How did you know that the : glass rod is positively charged and the balloon is negatively charged ? Why not the contrary ? ( why not vice versa?) if there are free electrons moving from one to another object, maybe in the vacuum aren t) Question : did you try it in vacuum chamber ?, ( where aren t free electrons ) question : did it incerase the mass of the rod glass or the balloon ,or did it decrease it ?)

[@maybejaden5907]

saving me hard rn man 🙏

[@alphawtel3157]

But how can we be sure of that is positive or negative?I mean how can we say whether the object is positive or negative

[@sadiaashraf7978]

Same question from my side. How can we find the charge on our hairs either positive or negative?

[@icyyyy3734]

I know that If a ballon gains electrons it becomes negative and then if a ballon loses electrons it’s positive in each question most of the times they say if the object lost or gained electrons if they ask specifically so if they ask how you know if a object is charged you say it either loses or Gains electrons

[@carultch]

There is a ranking of materials called the triboelectric series, that keeps track of how an interacting pair of materials are most likely to exchange electrons, and which one will become positive, and which will become negative.

[@mim4082]

whats the origin of elementary charge ;

[@carultch]

Are you asking about the cosmological cause of the elementary charge? Or are you asking how the elementary charge was discovered? If you are asking how it was discovered, look up Millikan's Oil Drop experiment, which discovered that charge is quantized. It is also the working principle of ink jet printing.

[@mim4082]

@@carultch who’s the father and mother, what’s it’s origin

[@carultch]

@@mim4082 Are you asking how people learned about it, or how the universe created it? Father and mother are meaningless terms for non-living things. Because I don't know the answer to the latter question, and I don't even know if the scientific community as a whole even knows the answer. This could be a question that is on the frontier of cosmology to answer.

[@mim4082]

@@carultch hi Carl yes how the universe created it and with what

[@kpop-lb3uk]

❤️❤️❤️😊😊thanks a lot.

[@FlippingPhysics]

You are welcome😀

[@adoseofecstasy2924]

You please make a black hole video

[@FlippingPhysics]

Unfortunately, not for a long time.

[@adoseofecstasy2924]

Flipping Physics thanks 🙏 you helped me during my June exams in South Africa , please continue to make videos

[@adoseofecstasy2924]

I got a B by the way for physics but got a low D for chemistry, I wasn’t there for most of my classes I was changing schools but I still thank you

[@FlippingPhysics]

I am glad I have been able to help you out. Keep on learning!!

[@PasajeroDelToro]

13:02 Well, I can answer that question. I recently deduced that the Gaussian unit of charge "statC" (aka "Franklin" aka "esu") is derived from electrolysis experiments with various oxidised or reduced ions amongst the chemical reactants. The units of statC are sqrt(mass flow x volume flow) and this correlates quite nicely with the Nerst Equation but you replace the natural log function with a square root. It seems that mass is more fundamental than charge according to the Nerst equation. You can think of charge as a parameter for a flowing system of particles, proportional to a ratio of pressure (kinetic) energy to the "thermal voltage" and a function of "entropy" (related to the number of configurations or "states" of the reactants). This is how close the curves are: www.wolframalpha.com/input/?i=plot+ln%28x%29+and+sqrt%28x%29from+x%3D0+to+10 Also see: en.wikipedia.org/wiki/Nernst_equation en.wikipedia.org/wiki/Entropy#History en.wikipedia.org/wiki/Faraday_constant en.wikipedia.org/wiki/Capacitance wiki2.org/en/Statcoulomb wiki2.org/en/Gaussian_units en.wikipedia.org/wiki/Talk:Statcoulomb wiki2.org/en/Voltameter wiki2.org/en/Tafel_equation physics.stackexchange.com/questions/73769/how-does-one-prove-that-energy-voltage-x-charge

[@arnesaknussemm2427]

Charge is a measure of a particles ability to interact with electric and magnetic fields.

[@FlippingPhysics]

True, however, at this point in the curriculum we have yet to define either electric or magnetic fields. That makes it problematic to define charge that way in this video.

[@arnesaknussemm2427]

@@FlippingPhysics fair point.

[@PasajeroDelToro]

@@FlippingPhysics Look into Electrochemistry for a better definition...

[@storyzanyakaro]

SI unit for mass is Kilogram

[@FlippingPhysics]

Agreed

[@cc-bz5ub]

Good

[@Byynx]

I like your video but he was wright it still doesn't explains what is a charge. And the last sentence in a way is a contradiction to the question what is a charge ?

[@carultch]

It is a property of matter that enables participation in the force of electromagnetism.

[@cc-bz5ub]

Truth swear my mother

[@cc-bz5ub]

I can't use laptop

[@johnellison1635]

So, the idea is, to use a rubber rod, rub it's on some fur, then see if it sticks to balloons. I'm definitely going to give it go.

[@Hussain-qt5ti]

you look like Leonard from the big bang theory

[@lexi67436]

thank uuuuu so muchhhh

[@FlippingPhysics]

youuuu aaaarrreeee weeeelllcccooommmeeee

[@parthsachdeva6224]

You look like leonard from The Big Bang Theory.

[@cc-bz5ub]

Truth

[@syedumairalishah1948]

Hahahha sooo interesting sir

[@harlbertmayerh7523]

yeyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy i know you will notice this!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[@adoseofecstasy2924]

Hey

[@youngstudies8743]

Dear sir, You look like elder brother of sir Benjamin Franklin Please dont take personally, 🙏

[@FakeVerma-f8k]

I am like black shirt students