Electric Charge and Electric Fields

What's the deal with electricity? Benjamin Franklin flies a kite one day and then all of a sudden you can charge your phone? There's a gap in conceptual understanding! Let's figure out what electricity is, exactly, and how it works, by defining electric charge and electric fields.
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Me watching Professor Dave: In High school - "This guy is going over kid stuff, my syllabus is above this" *Clicks away* In University - "Whaat? I did not know that. Did he just summarize 3 lectures worth of material in less than 10 mins??"

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Really?

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Do you want advance concepts

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this actually me XD

[@wissalkadri]

My professor took two hours and I don't understand a thing I watched 10 minutes of professor Dave and it's all clear now

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facts

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Professor Dave explained this 2-week topic in less than 10minutes. Bravo!!

[@LogosInsula]

It was for children,....

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Yet I'm still here😭@@LogosInsula

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Get lost he still taught everything that was needed​@LogosInsula

[@TechnoSan09]

A big topic in a nutshell

[@hanschrous1084]

In a nutsack

[@titancodm1098]

Kurzgesagt

[@royaaghbali9795]

I was having such a hard time grasping the concept of electric charges and electric fields, but you cleared it up so nicely, thank you so much Dave!!

[@benas664]

I love how you explain these concepts. I have no idea what i am looking at when i see the formulas, but i understand how and why things work the way they do. You have a very good approach that should be appealing to the average person. I certainly learned quite a few things . Keep up the good work and good luck.

[@Liz-ye1qi]

He left a cliff hanger. He didn't explain electric potential :(

[@spacejunky4380]

Lol I understand the formulas, plug and chug. And I thought it was interesting how he mentioned it was similar to Newton's law of gravity which I noticed a while ago and drew a parallel to the weakness of the force compared to the kolumn law.

[@NoName-xf9nl]

@@spacejunky4380 ok

[@kirstenruiz5675]

❤❤😊

[@yiannisserpico2646]

Each school should have such a physics teacher like you!!

[@augustinegeorge633]

Your videos are really good sir. Really helped me understand the concept. Most other videos are just repeating definitions shown in textbooks.

[@johnpro2847]

That was well explained Dave & I understood it immediately ..the bit after "professor Dave again" was the hard part.

[@jacobbaia6530]

Thank you so much I love what you are doing with the channel!

[@Raghav1205]

Really needed this , perfect timing . Thanks professor

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you always teach the most basics of a topic which makes it so easy to understand thank u

[@solapowsj25]

Very clear and helpful. Thank you.

[@emillsteenkamp2629]

This is probably the best video I've seen on the subject. Job well done.

[@luyandasthembisomzobe3074]

You've just helped me with the Presentation task I had to do this week

[@goetiastories3850]

I love the comprehension part! t hank you for taking the time to make these beautiful videos

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I found it excellent for my grade 10 student daughters. Be blessed Professor.

[@diaverna]

Your videos go straight to the point and always carry me through exams. Appreciate everything!

[@christyljude8137]

MY FAVORITE PROFESSOR! This guy literally just explained a three-day lecture in a 6:40 video. TT

[@harikalatheeswaran9206]

Professor Dave ,I am an Indian and an IIT (Indian Institute of Technology, aspirant.There are two competitive exams one have to write to get a seat in prestigious IIT colleges.I checked all the viedeos in your channel.All the videos​ are related to IIT portions.I am really gonna tell all my friends who are also IIT aspirants. Thanks a lot professor Dave.All the concepts are beautifully explained.Keep going your doing great. Thanks a lot professor.Have a nice day.☺

[@ProfessorDaveExplains]

awesome, glad to be of help! please tell all your friends to subscribe :)

[@harikalatheeswaran9206]

Sure ,professor.I will tell all my friends to watch your video and subscribe.Thanks a lot.Have a nice day.🙂

[@peculiarlawrence5545]

Hari kalatheeswaran iin

[@user-kf2ji5dz3j]

Omg bless you!! You have made me understand more in this video than 4 weeks of my physics 102 professors

[@Nebula2024]

Same here! 😄

[@scarlet0017]

you're the best. you explain in not how you understand but for how the viewers will understand

[@DougieBarclay]

that "checking comprehension" music was priceless

[@raykos4257]

Your videos are LITERALLY the best.

[@ElPurroco]

Now all of this concept are cristal clear to me , thank professor Dave ...

[@abdullahtauhid1908]

I have a question. Can you determine the force between two charges with their relative charges, I mean like +1,-2 and so on? Or do we always have to use 1.6×10^-19?

[@zainabmehdi6380]

great tutorial...

[@roastfire7242]

luv your explanation

[@tomisoetan9061]

For the checking comprehension exercise at the end, shouldn’t the force be negative because it’s between two protons and they’re both positively charged? Love the video by the way! It was helpful.

[@ProfessorDaveExplains]

the q terms include the sign, protons are positive so it's net positive!

[@ariaflame-au]

For electrostatic forces positive forces are pushing and negative forces are pulling, so the positive force has them pushing each other away. If it was negative then they would pull each other together. (Yes it's a little confusing that gravity doesn't do it that way)

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Amazing reading skill 👏🏻❤

[@my-crazy-fantastic-fanatic]

I was having a really bad day.. till the opening kicked in!

[@angeliemaebonaobra4448]

Thanks Professor Dave!

[@anastasiailieva3632]

thanks man...that was helpful!

[@adhit528]

hello Prof Did you make any video about the relation between the time-varying electric field and the time-varying magnetic field? plzzzzzzzzzz Reply!

[@skmohammedkhair4041]

Wonderful tutorial

[@haybhee5294]

Pretty clear Thank you sir ♥️

[@thenightwhisper2872]

thanks very much for this video, i hope you go forward

[@tindo0038]

very clear. Thank you

[@Inicrafting]

Love your intro dude i been laughing so hard for the past hour

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Thank you so much, we are really helped. Your tutorials really helps may God continue blessing you Professor Dave 🙏

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Your teaching is very useful to me sir

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your one idea helped maade my Masters thesis doonee, bossss

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Most productive 6 minutes before an exam I have ever spent thanks to Professor Dave!

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Best comprehension ever I seen. #DefinationsForStudents

[@MasterAssassino1]

Question: Is the General Chem and Organic Chem all the videos you have for chemistry? Thank you..keep up the amazing work. Love your short and to the point videos!

[@ProfessorDaveExplains]

i also have an organic chemistry practice problems series, a little extra review! and i have a few more general chemistry saved up that i'll slowly release. but otherwise focusing on other subjects!

[@MasterAssassino1]

Thank you! Stay awesome

[@valestuffs]

Thnx Professor Dave,once again u saved my life 💙🙏

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Nice lecture

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I am simply happy I found this channel

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Thank you!!❤❤❤❤

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thank you dave much love brother man

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Very helpful video

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Man explains bad teachers' hours of letcure in literally 5 mins! Awesome 👍

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Balloony science! Nice one!

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Wow stuff I had never learned before.

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Omg I wish the other chapters were this easy

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very nice, this is what i need.

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very well explained, damn.

[@zainabmehdi6380]

first of all real thanx sir for replying... so the clearcut statement wud be that ""shielding effect remains same from left to right across the period""... hope I got it right..

[@Kaleabe25]

Thank you professor

[@brighticoo5798]

thanks professor dave

[@nmrj0]

Sir can you please explain why an insulator can freely give away its electron just by physical rubbing. Is it not related to ionisation energy? If so, should it not be difficult to displace electron from the stable covalently bonded species.

[@samurai6995]

this is helping me a lot!!!!!!

[@Anime_lovers_357]

Best explanation

[@mehakseth3767]

Really great tutorial. Thanx sir

[@thaku262]

Great

[@user-yt5vw4el8o]

Hello professor ,is me again. You are saying : the transfer of electrons from our hair to the balloon. Three question :1- why not the contrary( vice versa) ?( maybe from the balloon to our hair , why not?)is like two magnets attracting each other ,which of them is negatively charged ,which is positively charged ? Both them attract each other . 2- if there are transferred the electrons ,what happened the mass of the hair ? And mass of balloon ? Is it decreased ? Or is the mass of balloon increased ? ( or vice versa). Did you try it in vacuum chamber ?( where are not electrons , does it work in vacuum chamber ? )

[@JeevanSamagar]

I studied everything in my clg This like a revision tq

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I cannot believe this man just taught a whole week worth of my syllabus in barely 10 minutes

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Thanks!

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Thanks professor dave.

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I got a quick revision, thx sir

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And love from india

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Is it on the cbse curriculum?

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excellent, thank you

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Hey Professor Dave, I can't help but notice, what is that tattoo of because it looks pretty dope! Keep up the good work your getting me through grade 12 physics in the land down under, Australia!

[@ProfessorDaveExplains]

i get this question so much that i made a video about it! check out "ask professor dave #3".

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this is literally all of what i learned in a physics class in a month bruh.

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Thank you so much

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Sir, your classes are awesome and it helps me a as I'm preparing for my class 12 th final board examination. Thank you a lot and all my friends are watching your video and I'm from Kerala (INDIA).

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So how did your exam go? Are you still studying?

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@@abhijithmenon2513 congrats man, good luck

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Thanks you!! It's so wonderful. Now i understand it. Say hi coming from Viet Nam

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Thank you sir

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Very well explained sir ..lot of love from India😊💌

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🤩🤩🤩

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Thanks professor

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Thanks for making those videos!

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Great work. I like how you explain

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good explaining

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wish yo more successes

[@trevorbates8972]

The way I have it is that at the centre of an atom is a hole which reaches into a different universal dimension...an imploding force we call the higgs-field. It is so powerful that it pulls plasma into it so as the imploding force is sealed...more or less...and it is this imploding force that, when disturbed, pulls other atoms into its catchment area. There is a limit to how much plasma can be held by the Higgs field and any excess is kicked out at the speed of light....and so, an oscillating Higgs-field carrie's attraction and repelling forces organised by the polarity of the many co-joined atoms.

[@saniazehra8845]

Sir it was a vey great video But i wanted to ask one question That why always electric field lines are directed outwards for positive charge and inwards for a negative charge?

[@lalankumar893]

Sania Zehra it's only a convention

[@mohituniyal7]

electric field lines are imaginary hypothetical lines which tells the magnitude and direction of electric field intensity at any point.

[@solapowsj25]

Force is a vector and it has direction. The direction of force in the field is indicated.

[@giulianomengoni6038]

Congratulations! You are a great teacher. I have a question, if I may ask (apologize my English): If protons (+) are stuck inside the core of the atom, and electrons (-) lay outside on circles, how can external (on circles) charges be positive ? How can electrons leave this circles to go on another one's atom if all external forces are negative (-), then rejecting forces? Thanks a lot

[@tellau]

ofc i'm not professor dave but i think you got a bit of it wrong here. yes indeed protons are in the centre of the atom but the charges on the surface can be positive not because protons are present on the surface, but because some of the electrons on the surface are lost. when electrons are lost, the material obviously becomes positively charged.

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Ranbir kapoor is that you?

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Funny that you are a Kapoor as well

[@archanasharma9035]

Nice thank u so much.

[@DepressedLemur9]

Yes, but what IS charge? What does charge mean? I know the protons are positively charged, but what does that mean precisely? Is it about energy? Why are electrons negatively charged? Can particles lose charge over time? Why is something charged by nature? Why is electron floating around nucleus? What keep it not stick to nucleus? Whats preventing it to fly away?

[@ishankandari7849]

0:50 okay.. I got a doubt (it might be a silly one tho,,) So if the hair becomes positively charged then shouldnt it repel itself with the hair of the other side where the second balloon was rubbed??

[@helen9649]

Can you do a video on reclaiming your own energy fields when someone keeps switching your polarity against your will.

[@michaelleonardlubiano3912]

Wo ai ni, PROF. DAVE!

[@halimearslanlar7841]

how does the electric potential change along the direction of the net electric field? Can you answer that please? I m confused.

[@shreyasingh8498]

Thank u sir

[@johnmcclelland649]

Professor Dave, what determines which of the 2 objects will be positively or negatively charged when rubbed together? eg balloon vs jumper

[@writerNB]

hello john: this is a good question. in video professor dave states: "all materials start in neutral state" (this is true ....mostly) some materials are more "radioactive" than others. what I think is happening is "materials" (lets stick with balloon-hair friction experiment) have different electrical "tendencies". hair of course is different structure to balloon. both materials are moving during "friction-event" professor dave states: "electric charge is displaced by rubbing these materials" (balloon hair) "displaced" means one thing now occupies location of previous thing. (this is not helpful).... what are these things? where are these locations? which thing is "displaced" by next thing? friction is actually a kinetic event. (because all material objects possess transferable energy). in some cases, this energy can be transferred easily. in others, energy cannot be released easily. professor dave is defining this energy release (here) as electron flow. (i think the electrons are gaining a negative charge during friction event). this is a guess. we cannot see electrons gaining a charge.... (if anyone gets this far, and says... sure we can see electrons gaining a charge, please let me know- i would be very interested in this data). (some electrical engineers question whether an electron actually exists). this is confusing. tesla called electron an electrostatic "shell". so...shells of force are being created during friction event (maybe). tesla tended to be very advanced in his understandings of electrical principles. we detect this shell-force as "electricity" - a flow of negatively charged electrons wants to go somewhere... where? maybe back to a neutral state... unless material remains radioactive (so some materials retain charge, some dissipate charge). peace: thanks for reading.

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I found your channel. I am so luvcky 😭💜🙏

[@vasundarakrishnan4093]

Great video. But I have a question. I get that you call something negatively charged when it has excess electrons because electrons are negatively charged. But what exactly makes electrons negatively charged or the protons positively charged?

[@carultch]

The short answer is convention and history. It is a completely arbitrary that electrons are considered negative and their counterparts the protons are considered positive. Benjamin Franklin who studied the triboelectric effect, took a guess that some substance was flowing from the silk to the glass, in order to make the glass get positively charged. He proposed that the silk was losing some of this substance, and the glass was gaining this substance, when he rubbed the glass rod with the silk. He believed that the glass rod would now have a surplus of this substance (which he called a positive charge), and the silk would be left with a deficit (which he called negative charge). Unbeknownst to him, reality was the other way around. The electron is the most mobile charge carrier in most matter familiar to you, and the glass rod was really losing electrons to the silk. It wasn't until J. J. Thompson discovered the electron, that we could know this fact. With his experiments with cathode ray tubes, he discovered behavior from the negative terminal of a circuit, that didn't happen with the positive terminal. This is why it is the cathode ray tube, instead of the anode ray tube. The rays are rays of electrons that attract positive charge, hence the term cathode ray.