Circuits, Voltage, Resistance, Current - Physics 101 / AP Physics Review with Dianna Cowern

Рет қаралды 354,042

3 жыл бұрын

Lesson 19 (Voltage, Resistance and Current) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need a review of AP Physics concepts before the exam? This course is for you!
Exercises in this video:
1. If you connect 10 AA batteries, each with a voltage of 1.5V, in series, what will be the total voltage of the resultant battery pack?
2. What would be the voltage if you connected them in parallel?
3. If you shoot an electron across a potential of 1000V, how fast will the electron end up going?
Credits:
Dianna Cowern - Executive Producer/Host/Writer
Jeff Brock - Lead Writer/Course Designer
Laura Chernikoff - Producer
Rachel Watson - Video Editor
Bryn Bishop - AP Curriculum Consultant
Sophia Chen - Researcher/Writer
Erika K. Carlson - Researcher/Writer
Hope Butner - Production Assistant
Levi Butner - Videographer
Lauren Ivy - Set Design
Vanessa Hill - Consulting Producer
Aleeza McCant - Illustrator
Rachel Allen - Illustrator
Consultant - Kyle Kitzmiller
Lucy Brock, Samantha Ward - Curriculum Consultants
Cathy Cowern - Transcription
Thank you to ASAP Science for the wonderful message!
/ @asapscience

Пікірлер: 611

@Dwayne7 3 жыл бұрын

Why this channel is soo underrated , it deserves a lot tbh 🥺

@Vector_Ze 3 жыл бұрын

Well, two million subscribers is nothing to sniff about.

@epicasteroid6873 3 жыл бұрын

Don't worry its growing People like you and me gonna support it 👍👍👍

@sitarnut 3 жыл бұрын

Lads, here is another thought... education nowadays, doesn't contain a lot of science, or practically no science taught in many schools. In my time we had science fairs, and lots of demonstrations on many aspects of science. For goodness sake, we had Don Herbert, Mr. WIZARD on TV every week. There was city-wide science competition between the schools by grade! Presently, kids are into a phone many hours per day involved in ego building from social media... that doesn't promote the ability to even construct a proper paper airplane... much less the splendid balsa, stick and paper, rubber powered craft which I still build to this day. Lately, I tried to interest a youngster starring into a tablet at the laundry how to construct a paper airplane. I folded it , sailed it clear to the other end of the shop.. his eyes lit up for a brief second, and went back to the tablet. If he only knew the engineering math involved in even that paper job....no curiosity to even wonder why it would, or could fly at all... guess I'm just too old. Anyway, try this: kzfaq.info/get/bejne/rNKarJadsK-yXWQ.html

@Dwayne7 3 жыл бұрын

@@Vector_Ze what's wrong with the thing I said ? I didn't mean to undermine her current number of subs duh.....

@swayamprakashkar9664 2 жыл бұрын

Laughs in 2 million

@JCRFast 3 жыл бұрын

I'm a 50 year old mechanic. 30 year ago I had a difficult time learning the basics of electricity. I compared it to the flow of water from a tank thru a hose thru a nozzle. Voltage,amperage,current flow. Ect... Wish you were around 30 years ago. Thank you for making physics easier for my children to learn.

@daveturnbull7221 3 жыл бұрын

This better not be the end of Phsics Girl - I need her to keep reminding me just how little I know and understand.

@kinda2046 3 жыл бұрын

Somethings coming up with me and her......

@ElectroBOOM 3 жыл бұрын

GREAT COURSE as always! at 19:07 you mentioned mass doesn't cancel, but maybe it could. the q or amount of charge can be written as as n x e (number of electron times charge of electron) and number of electron would be Total mass (Mt) divided by electron mass (Me). So q = Mt x e / Me. So this way total mass would cancel from both sides of your equation, I guess! Am I wrong?? So instead of mass, you would have charge per mass of electron as a fixed factor (e/Me) And one question, sorry I'm one of those pesky students! It seems at around 250kV and above in vacuum electron would reach speed of light and pass it, but it won't I guess. What is limiting electron?

@DEADPOOL-ti4cs 3 жыл бұрын

Mass

@Afrotechmods 3 жыл бұрын

My understanding of it is that electrons do have a certain mass. And as such even when you accelerate them they can only asymptotically approach the speed of light but never equal it. If you were able to create a really strong field in a vacuum and somehow accelerated a mass above c, then how could you keep the field going with the object in the field? The plates would have to be moving apart much faster than c. c is basically the upper limit of the ability to propagate mass or information within our universe. As to why that is I do not know, that's well into the realm of quantum physics.

@PONO-go3ee 3 жыл бұрын

ElectroBOOM in Batteries ( Dendrites) accumulate across the two opposite Polarities as Mass and can cause Mass , and causes a Electrical Short

@ElectroBOOM 3 жыл бұрын

@@Afrotechmods That makes sense, which means the speed calculation equation should probably have another factor in there that comes into effect at speeds close to light.

@rmsgrey 3 жыл бұрын

As with everything else with a rest mass, as an electron gets close enough to the speed of light, energy goes more to increasing its mass and less to increasing its speed. You can never actually accelerate something to the speed of light because of that effect. And, yes, you're right that you end up with the charge/mass ratio of an electron as a constant factor in the equation (just like there's a mass/mass ratio, which cancels to 1, for gravitational acceleration)

@tomskih203 3 жыл бұрын

Absolutely incredible woman. I admire her so much and I hope many young girls aspire to grow up to be like her.

@markdelagasse8641 2 жыл бұрын

I’m 76 years old and have worked with electricity all my life. It was a lot more fun watching you than my instructors in the Navy and the civilian classrooms.

@joemama142 3 жыл бұрын

I can't believe I just found this now, I almost missed it and now I gotta go see them all. Thank you so much for all your hard work.

@nishthasharma22 3 жыл бұрын

This is an amazing series, Diana! Simply spiffing. Thank you so very much.

@MentalLapse 3 жыл бұрын

The best part of this series has been watching your enthusiasm for the subject. Even if you don't get people to go into physics, I hope people will be encouraged by your excitement and go find what excites them and create this much joy in their own lives. Well done :)

@devonashwa7977 Жыл бұрын

thaats probably the drreamer in u talking, our lives are miserable and will always be so. but hey atleast we got a "friend" in diana

@richardcampbell4506 3 жыл бұрын

Loved your whole 101 series. Thank you 😊

@els1f 3 жыл бұрын

I loved this series! She makes all these great videos about fun topics, but she is somehow even better at teaching the actual _science_ part of science. Her love of the topics translates on her face and her enthusiasm 🙌🙂

@madhealerofwindurst807 3 жыл бұрын

I'm sorry to see this series end. It was fun. I look forward to seeing what you do next Diane and Crew.

@Bassotronics 3 жыл бұрын

Thank You for so many years of wonderful science videos! I will continue to enjoy what you have to offer in the future.

@topjeeneethindi1064 3 жыл бұрын

LED : Learning Electricity with Diana 😃

@cxffaye 3 жыл бұрын

Yesss

@TeslaElonSpaceXFan 3 жыл бұрын

Hmm, and what is AMOLED? :p

@topjeeneethindi1064 3 жыл бұрын

@@TeslaElonSpaceXFan i AM Obsessed with Learning Electricity with Diana : )

@xdragon2k 3 жыл бұрын

Wait... isn't that just ... LEWD???

@topjeeneethindi1064 3 жыл бұрын

@@xdragon2k THEN FBI SHOULD BE FBOI. :)

@joshgaming420 2 жыл бұрын

Loved this series! Dianne please make another one, never stop learning ; )

@ashmomofboys 2 жыл бұрын

I just came across your channel and I absolutely love it! I’m a physic nerd myself and I love your explanations. Such an awesome channel I wish I had known of sooner. Will definitely be sharing!

@lavanyabhat3796 3 жыл бұрын

Thanks so much Physics Girl!!! Because of you, I was able to appreciate and fall in love with a subject I was legit struggling with!! I thank you with all of my heart and wish you the best of luck!! 💓

@trtlphnx 3 жыл бұрын

As A Mathematician, I love Your Presentations; Thank you for Giving SO Much, to So Many For So Little!!!

@MohanKarulkar 3 жыл бұрын

Dianna this is so fantastic! my kid's been watching these and getting smart beyond his years :) you do such a better job than i can!

@earthkind 2 жыл бұрын

Awesome! That was a lot to ingest in one sitting. I've been learning about solar and batteries. So this was the super technical side of building a solar carport to charge a Nissan Leaf. Loving your channel. Thank you :)

@ragtop63 2 жыл бұрын

This brings back so many memories. I remember learning about this when I was 6 or 7 years old. I had to build a power converter that converted 110/120 volts AC to 12-14 volts DC. I spent a significant amount of time learning about how electricity works and the physics behind it.

@KieranGarland 3 жыл бұрын

Really good, really helpful. Brilliant on the intuition for what's really going on. Thank you!

@erichclark1360 2 жыл бұрын

Totally loving this series! The writing is very clear and your enthusiastic delivery makes them a joy to watch! If only I’d had these kinds of videos when I was in school! At the 8:18 or so you talked about wiring batteries in series vs parallel, and you were clear that the voltages are additive in series but not in parallel. That might have been a great place to talk about amp-hours, a particularly relevant topic now since high amperage-hour demands are often met by small batteries in parallel (like cars).

@travisgatlin536 3 жыл бұрын

I've been learning a ton about electricity lately for various projects, and this makes some of the things I've learned make a lot more sense. Great video.

@elisecurran9497 3 жыл бұрын

So glad you started this Physics 101 series....more user-friendly for teachers!

@some18youknow Жыл бұрын

You have a great channel! Just started watching your videos and they are amazing!

@samedwards6683 4 ай бұрын

Thanks so much for creating and sharing this educational and entertaining video. Great job. Hope that each day you are feeling better than the day before 🙏

@tree_carcass_mangler 3 жыл бұрын

"Learn (more) by teaching." Interesting advice. Thanks so much for producing this series. Thumbs up!

@ShirinRose 3 жыл бұрын

As a Chemistry tutor, I second Dianna's advice. I understand Chemistry way better from having taught it than I ever did while I was studying it.

@Taran72 3 жыл бұрын

So sad it's over!! But your channel lives on for ever so it's ok!! I love all the work you do and love all your supportive staff! Thank you so much for this channel. Yes, I agree: we learn so much by teaching.

@baasantserenganbold2925 3 жыл бұрын

I have watched every single lesson of this course and I have learned so much. So thank you very much.

@mrmcafeeboat2887 3 жыл бұрын

I glad you like it

@amritmohapatra1901 3 жыл бұрын

I really love this series hope you make another series on other topics

@JCtheMusicMan_ 3 жыл бұрын

Dianna! Either I was not paying attention in college physics or you did what my professor did not! By emphasizing the connection between the two equations, I will never forget Ohms law! Thank you for your awesomeness! 🥰

@mltorrefranca 3 жыл бұрын

This has been a great series! Thank you so much!

@maxwaters1461 3 жыл бұрын

Damn, and here I had thought she teaching these in parallel. Series circuit versus parallel.....

@Doc959 2 жыл бұрын

@@maxwaters1461 😂😂😂

@Sciencedoneright 3 жыл бұрын

From nerdy pool vortices to crazy electric boi. You've come a long way Diana

@Prince-dz6xm 3 жыл бұрын

Mark me present So sad that the series is ending but would be happy if more of such series would release.

@colbynye5995 3 жыл бұрын

Fantastic series! Thank you!

@ronpaul9172 3 жыл бұрын

As a Network Engineer that has ALWAYS loved Physics, I am sooo glad I found you.

@tonygutermuth9347 3 жыл бұрын

I love the comparison of Voltage to the energy potential of lifting a weight against gravity, especially as it relates to batteries. I've always used an analogy comparing electrical potential in a battery to water in a water tower. The new analogy comparing electrical potential to lifting a weight in a gravitation field might help people understand in a different way. Great series!

@HadarCo 3 жыл бұрын

How fitting is it that my suggested next video is ElectroBOOM's 😂 Awesome Lesson (and course, of course haha)! As an Electrical Engineering student (4th year, soon to be over 😅🙏🏻) this whole course is a big flashback of past Physics courses (which I loved obviously), but this one is like my bread and butter 😁

@Bassotronics 3 жыл бұрын

And Electroboom commented here too.

@josephsage3524 3 жыл бұрын

Loved it. Thank you for the mental stimulation ⚘

@SamiKankaristo 3 жыл бұрын

15:50 Can't remember where I heard this analogy originally (probably KZfaq), but it's a pretty good explanation of the "speed of electricity". Think of a hose that's full of blue marbles, and the hose is just wide enough that the marbles make a line that's one marble wide. If you push a red marble in from one end of the hose, a blue marble pops out the other end of the hose pretty much instantly, although the red marble you pushed into the hose moves slowly. Electrons or electron "holes" behave similarly to the marbles. You have extra electrons at one end of the wire, and a lack of electrons at the other end of the wire (the electron "holes" move from the higher voltage to the lower voltage). An individual electron moves slowly, but the "stream" of electrons in the wire is almost instant.

@shpambypamby3113 2 жыл бұрын

Brilliant

@AntonioMeres 2 жыл бұрын

I love your work, I love the way you love what you do, I love how you preach about science and I love your communication style. Everything is perfect and please oh please! Keep going. Never stop. Cheers!

@mikeypick1 2 жыл бұрын

I failed out of electronics school in the navy about 20 years ago. If I just had this video 20 years ago, my life would be so much different now. I can’t imagine how many people’s lives are forever betterfied (that’s a real word I just made up) as a result of Physics Girl videos. Thank you!

@stormrungaming 3 жыл бұрын

got added to a playlist without even watching yet. You never disappoint.

@maxwaters1461 3 жыл бұрын

You nailed it PG, "Work comes from a force.", it been my experience while at work, that force is usually my boss.

@MemphiStig 2 жыл бұрын

i didn't know you were doing these. i'll have to go back and watch, cuz i've forgotten most of this since high school. never too old to learn. or re-learn. or reinforce. physics is cool!

@user-hp4vg3ek2y 3 жыл бұрын

Thank you for doing these even though they probably don't get the activity they deserve. I enjoy them!

@bobair2 3 жыл бұрын

Super lady Diane ! I love anything that has to do with electricity and what is also known as Ohm's law and for that-thank you!!!!!

@ahmjamil0 3 жыл бұрын

Excellent presentation. You are absolutely correct ! The best way to learn is to teach.

@Texas1FlyBoy 2 жыл бұрын

26:40 - To teach something you learn it incredibly well. I believe that wholeheartedly. Or to say it another way: You know you've learned something well when you can teach someone the material (without error, of course).

@Buddythunder1 2 жыл бұрын

Ah, this takes me back! Happy days, nice work.

@ethantomah 3 жыл бұрын

This video is helping me for science Olympiad! Thank you!

@VictorNguyen-cc2ww 3 жыл бұрын

i just started this unit and this video helped me a lot!! thanks!

@phizics 3 жыл бұрын

If i had a physics teacher like you i would be next albort ion-shine. Great work diana ❤️

@naveenraj2008eee 3 жыл бұрын

Exciting to learm about electricity.. My major.. But sad to see this series end.. Hope to learn more from you.. As usual lots of physics learned.. Thanks..🙏

@tarunkumar5957 3 жыл бұрын

It's there for my syllabus thank you

@outside8312 3 жыл бұрын

I'm really going to miss this! I hope you decide to do a second series in the future 🤞🥺😢🙏 Some of us only have KZfaq as school, even when we aren't in a pandemic. These types of series make the world of difference.

@alexmason7393 3 жыл бұрын

I'm an embedded system engineer, we used to learn this in our physic class and now I completely forget that I studied this. You're basically quoting exactly from the book I used to study but I never get to the part where I have to use the word quantum :)

@yvonnevalenza7583 2 жыл бұрын

This morning, my daughter wanted to watch Physics Girl which we started tuning into very recently. She chose this one and when you were doing all these electricity related equations. I asked, “Do you want to watch something else? Or do you find this interesting?” She goes, “No, I find this interesting!” I told her she was ahead of me, learning about these equations at not even 7 while I’m learning about them for the first time at 37. She laughed. She loves learning from you!

@kakashi3k 3 жыл бұрын

Just started school for electrician and OHMS Law is a rule of thumb. Never thought I would hear this from a physicist. Wow!!!

@StaticBlaster 3 жыл бұрын

I'm glad I stumbled upon your channel. You have a lot of great content plus I love a girl who is smarter than me. I barely understand electronics. Thanks for clearing these concepts up.

@arielmullins0 2 жыл бұрын

This is above my head, but still fascinating! I listen while I wash my dishes, and hope someday it will click!

@milton.morais 3 жыл бұрын

Hi Physics Girl! I was searching a video that could explain how display stylus can have its great precision. I find out that it works with an inductive technlology which make even buttons on this stylus works with displays, ok, but it's incredible how its precision make it be useful to even artists use it nowadays. I let this suggestion to the next videos. Best wishes to you and everyone!

@deborahbaker1254 3 жыл бұрын

I just discovered Physics Woman (Girl). I watched your first ever video then skipped ahead to this most recent one. Wow what a difference. You've definately become a pro and more comfie at making you tube vids

@antonio39776 Жыл бұрын

I am an electrician and this was one of the best explanation i ever heard

@DuiChang Жыл бұрын

Love this series

@papaowl13803 3 жыл бұрын

Please let this not be the end. It's Diana's way of teaching that I have learned so much.

@WouterVerbruggen 3 жыл бұрын

Yay superconductors! Nice to hear my field getting a mention. In contrary to that new "RT" superconductor research tho, we're working on actually applying them in practical system ;-)

@franklinshriver8441 2 жыл бұрын

I liked physics before..yet was always an above average insecure dude with no idea what to do next..but now I love physics, thanks to Diana. I wish more teacher's could learn how to present material the way she can! Thank you D.C.🙃

@parinitiverma9895 3 жыл бұрын

0:52 Dang, it IS my birthday. I almost got a heart attack when she said that! edit- SHE POSTED A VIDEO ON MY BIRTHDAY!!!!!!!!!!

@balancedeuphoria7353 3 жыл бұрын

kzfaq.info/get/bejne/n8eZZdGdqtG0g30.html

@Gangst3r4ever 3 жыл бұрын

Cool. Lucky you

@neeluverma6752 2 жыл бұрын

@Flammable Flame 505 😂😂😂😂😂😂

@geoffreybartlett9293 3 жыл бұрын

I hope you will continue producing content. Love the sound of your voice. Of course you look good too...

@316therocksays 3 жыл бұрын

I love your enthusiasm about science

@trevorstewart1308 2 жыл бұрын

As a humble pickle farmer and amateur physicist, I don’t have much time for in death physics lessons, so this format has been perfect for relearning the basic concepts and math involved; thank you very much. You are also a very effective science communicator. It would be wonderful to see a course on each of the topics covered in this corse Ps have you ever made and electric pickle (aka a pickle-light)?

@adveshdarvekar7733 2 жыл бұрын

I really needed this basics!

@Alex_Hetherington 2 жыл бұрын

You are now my favourite Physicist, I'm currently in training for a new job I got recently at a Battery shop (:

@Jutilaje 3 жыл бұрын

One of the easiest examples someone told me to understand volts vs amps, and series vs parallel is imagining that the battery is a tank of water. Volts are like the "pressure" of the water, while Amps are like the volume of the stream of water. If you line them up side by side (in series) you would have more volume of water, but the pressure would be the same because the water column is the same height in 1 battery as it is in 100,000 batteries. On the other hand, if you stack them one on top of each other, the "pressure" (voltage) increases just like it would with tanks of water, because the water column is taller. In the case of batteries, the 1.5v in the top battery "pushes down" on the 1.5v in the next battery from positive to negative, so now there's 3v of "pressure", etc.

@Troll-by6kz 3 жыл бұрын

Omg😢 I can't believe it's the last episode... my final test for Pre-University is coming soon and I hope i got into Physics field!!!! I REALLY LIKE IT!!!

@hash5996 3 жыл бұрын

She's the teacher we all wish we had

@brendonesia2000 2 жыл бұрын

Great stuff, I love this

@xavclifford1397 3 жыл бұрын

Love your spirit!

@neerajmehta3461 3 жыл бұрын

I was very much surprised by your words wich directly striked my mind. I love your explanation 👍🏻 keep it up Love from india🤗

@kdog8787 3 жыл бұрын

15:38 In a purely resistive (ohmic) circuit, current is proportional to voltage. In general, current is monotonic with respect to voltage (more voltage=more current).

@angelalewis3645 Жыл бұрын

This is awesome!

@daudkharal1328 3 жыл бұрын

Really sad about the last lesson, The series was amazing. Love from Pakistan!

@onmyknees9108 2 жыл бұрын

Wow happy to see a fellow pakistani here .....salam alaykum bhaiii😊😊

@daudkharal1328 2 жыл бұрын

@@onmyknees9108 yess, you're just like me i.e. happy to see pakistanis making good use of youtube lol. Which grade are you in btw?

@onmyknees9108 2 жыл бұрын

@@daudkharal1328 2nd year

@onmyknees9108 2 жыл бұрын

@@daudkharal1328 3 din baad physics ke paper he iss liye yahan pohonch gya 😂😂😂

@daudkharal1328 2 жыл бұрын

@@onmyknees9108 lmao! concepts ka board mein koi faida nahi hona (just sayin) Past papers ko Koran ki tara parho (you already know that tho). Merey bhi exams aney waley first year ke :(

@tysondog843 3 жыл бұрын

If I had this...some years ago...I would have done much better at school. You are changing the world, literally. If you aren't telling your kids not to watch this (because then they will) you are mad. She teaches adults new things every week, imagine how it can help your kids.

@eccentricOrange 3 жыл бұрын

Will there be a series 2, probably for AP Physics 2? Discuss magnetic fields, fluid mechanics, nuclear physics - the interesting stuff!!

@imyasharya 3 жыл бұрын

Hmm, studying Physics with you is really exciting because you bring up practical applications of it and even show it up. I hope my school would have done the same but nonetheless I love Physics and a great thanks to the channel Physics Wallah for making it so.

@bulldog-lincspirits.4648 2 жыл бұрын

Wow I'm a new sub but I find your videos so interesting and I'm learning so much thank for sharing your knowledge..God bless

@therealsupercharlotte 3 жыл бұрын

I JUST WANNA SAY THANKS TO DIANA'S TIPS BECAUSE I TOOK NOTES THEN SHOWED THEM TO MY FRIENDS AND THEY THOUGHT I KNOW ALOT ABOUT AP PHYSICS EVEN THOUGH I'M IN GR 1O LOL. BEST SCHOOL FLEX EVER

@m101ist 3 жыл бұрын

This is the first one of your KZfaq videos watched from UK Wales. Science and a sense of humour.🙄

@PJeBenn 3 жыл бұрын

Nooooo, this can't be the end where will I get my little square cow and round cow fix! I love the little cows. Also, great video series I have seen full university professors not do as good a job explaining the basis of introductory physics. I suspect this series will be used in a lot of classes.

@hanoroam2259 3 жыл бұрын

we need more of this

@reenajericajohnson1829 3 жыл бұрын

U r amazing i admire you so much❤ I like physics now coz of you.

@madhyamangrish2451 3 жыл бұрын

Dianna cowern is the best❣️

@wesleycurtis750 3 жыл бұрын

You should be shown in schools... So much better and more inspiring than my physics teaches were!

@hadiakashif8328 3 жыл бұрын

I READ THE SAME THIS IN SCHOOL BUT THIS IS 💯 times more COMPREHENDIBLE.... thanx Physics Girl ( I wish u were my teacher )

@uzidicis1938 3 жыл бұрын

This is a Great! Chanel, Im just 11 years old, and i am from mexico so when i see your videos i learn english and physics

@johnehteshami725 3 жыл бұрын

Great series of videos super fun and engaging. Can you at your convenience do a video on this article: A new method to calculate the properties of atomic nuclei incredibly quickly! Regards

@ProFriend 3 жыл бұрын

Physicists may use V for voltage, but in the electronics world we use E, for Electromotive Force, which is what it was generally called before it was renamed the Volt to honor its Italian discoverer (and inventor of the battery) Alessandro Volta. Our version of Ohm's Law is E over IR.