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Dielectrics in capacitors | Circuits | Physics | Khan Academy

Оценок: 3648 | Просмотров: 321302
How dielectrics function in circuits. By David Santo Pietro. Created by David SantoPietro. Watch the next lesson: https://www.khanacademy.org/science/physics/magnetic-forces-and-magnetic-fields/magnets-magnetic/v/introduction-to-magnetism?utm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson? https://www.khanacademy.org/science/physics/circuits-topic/circuits-with-capacitors/v/capacitors-parallel?utm_source=YT&utm_medium=Desc&utm_campaign=physics Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Physics channel: https://www.youtube.com/channel/UC0oGarQW2lE5PxhGoQAKV7Q?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
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Текстовые комментарии (256)
Pranjal Pratim Mech (8 дней назад)
Thank you for the wonderful explanation
Rema A (10 дней назад)
Thank u so much. Now only i understood the concept.
Anuska Bhuyan (15 дней назад)
Khan academy 👏👏, hats off to u .
Nafin Mahmud (22 дня назад)
damnnnnn......the explanation is 🔥🔥
Uzair Awan (27 дней назад)
in without battery case how the charge after cancelling remains constant and only voltage decreases???
Culpable Injustice (1 месяц назад)
Amazing explanation!
Commando303X (1 месяц назад)
You're not Sal... IMPOSTOR!
Mr crow (1 месяц назад)
Carolina M (1 месяц назад)
I've been studying this for 4 hours and needed a better way than just reading the textbook. I completely followed and I feel so much more refreshed. Thank you!
Arooba Siddiqui (1 месяц назад)
Love love love 😂 amazing
Ameen Sha C (2 месяца назад)
When removing battery Will the charge move across wire and come to battery gap
Ananya Mohanty (2 месяца назад)
Amazing 💕😍
Yoram Stein (2 месяца назад)
Great video and even little funny....this guy is good. Please more on electricity/ electronics
Majid Nesar (2 месяца назад)
I've been turning over the pages of my physics textbook since a week, until I was gifted with this VIDEO. I actually learned the concept in 7mins which I was wondering about for whole week♥️♥️♥️
Miss Me (2 месяца назад)
Absolutely wonderful conceptual explanation; these are so hard to find nowadays. Thank you so much.
mohamed riazur rahman (2 месяца назад)
extraordinary explanation u r great crystal clear explanation hats off .....
lazz lazz (3 месяца назад)
This is amazing thanks .
Brandon Sedgwick (3 месяца назад)
“Because that’s just what batteries do”😂😂😂 4:39
Mostafa Amean (3 месяца назад)
السلام عليكم الترجمة الخاصة بهذا الدرس كاملة ممكن إي شخص يدخل على إضافة لغة جديدة و ثم يقيم الترجمة كي تتم إضافتها 😊 و تصبح متاحة بشكل مباشر 😳
Phil Busby (4 месяца назад)
This is high school grade level learning, but taught in a manner for earlier-level school. This poses the question that perhaps young children should be taught the basics about sciences, so that when they go to high school the fundamentals are already understood. Someone here commented below why go to university when such videos are available. Trust me, electronics E101 at university is so so so much more complex than this!! It would certainly have helped me to have watched this video and understood such fundamentals around 10 years old.
Okikiola Agbabs (4 месяца назад)
Interesting video... Good job... Thanks for helping my understanding
파랑색쿠키 (4 месяца назад)
YOU ARE THE BEST... I respect you... Where can I pay you!! Give your bank account!!!
K Kishtarapu (4 месяца назад)
Excellent explanation. Simple and. Straight forward.
Oupa Mpatlane (5 месяцев назад)
you made it look so easy wow.
Thunder_ (5 месяцев назад)
why does capacitor store more charge with a dielectric than without dielectric??
France Cleo Villanueva (5 месяцев назад)
But isn't it increasing the charge would also mean an increase in voltage, resulting in an equivalent ratio, therefore not changing the capacitance of the capacitor since the ratio remains the same? That is according to another Khan Academy Tutor here: https://youtu.be/u-jigaMJT10?t=4m52s PLEASE CONFIRM THIS. Thank you.
Mahendra Gaikwad (6 месяцев назад)
Thank you
Teja kiran (6 месяцев назад)
Thanks a lot .... U made me understood the clearcut idea behind dielectrics
Ayman Bukhari (6 месяцев назад)
So perfectly explained that even my useless brain could easily understand it.
Elema Khatun (6 месяцев назад)
Wow wow wow..........awesome
Ragdoll-TV (6 месяцев назад)
just perfect!
TALHA MUSTAFA (6 месяцев назад)
I can just say WOW after taking this lecture
Alberto Perez (6 месяцев назад)
awesome video
Raminder Singh (6 месяцев назад)
Vvvv'vvvvvvvvvvvv nice....... Perfect absolutely answered each of my questions... .. . . . .i just want to this video a no of likes.............
Journey To Medicine (6 месяцев назад)
tayyaba iqbal (6 месяцев назад)
Christina Cho (6 месяцев назад)
EradicationX | Today (7 месяцев назад)
kappa :^)
Arsh Dev (7 месяцев назад)
exellent video
adarsh sharma (7 месяцев назад)
very very useful
A W (8 месяцев назад)
David Santo Pietro is the best
Ananya (8 месяцев назад)
guys just increase the speed of video to max and you get an awesome rap !! not even kidding , try it!
Sagnik Saha (8 месяцев назад)
Thank you sooo much
GHS BHARATHIYAR NAGAR (8 месяцев назад)
This is absolutely amazing .I totally understand it now. this is so satisfying. Thank you soo much.
Vishnu Akundi (9 месяцев назад)
Ankur Rai (9 месяцев назад)
What if 2 different dielectrics are inserted in a capacitor ?
Hasibullah Mahmood (9 месяцев назад)
excellent, great explanation Thank you
Alisha Parveen (10 месяцев назад)
Really good video..liked it so much..simple explanation but clear.
conner hartman (10 месяцев назад)
I just want the song.
Harsh Kumar (10 месяцев назад)
Thank You So much, just what i needed after all these time.
Rohma Khan (11 месяцев назад)
Thanks for making it so simple ☺
myadam harshitha (11 месяцев назад)
Good explanation liked your way of teaching
Bogs Soriano (11 месяцев назад)
I have a problem. Can you pls answer this. The dielectric in a capacitor is changed to a material with a dielectric constant that is larger by a factor of five. If the charge on the capacitor is held fixed, by what factor does the energy stored in the capacitor change? Explain why the energy is different in the two cases.
Fire Friends (11 месяцев назад)
At 5:11 how can the voltage across the plates remain the same? First it is clearly explained in the video that the voltage across the plates decreases due to the introduction of a dielectric medium. Now if a battery is connected, it will try to increase the potential across the plates to make it equal to its own voltage. In the process of doing so, both the charge and voltage of the capacitor should increase.
conner hartman (10 месяцев назад)
I believe that what is happening is that the charge is increasing until the voltage is the same and the extra charge is being occupied by the dielectric. So, the voltage remains the same even though the charge is increased.
Chris Andrade (11 месяцев назад)
Thank the lord for this video
Nihilist (11 месяцев назад)
This was amazing and I love when u make the videos instead, u taught me circ motion and wooooo
Nihilist (11 месяцев назад)
I wish u made all the physics video
paul worth (11 месяцев назад)
Who knows how many atoms are in the none conducting material. But if they all move to align into + - positions in a fraction of a nano second, you would think this would cause some damage to the material. I don't believe it. I think they haven't got a clue about electricity . Try looking up, or can someone explain what dielectric actually is? I don't believe there is positive and negative electricity. Just charge or discharge. In a circuit, using a battery, at what point does the electricity travelling threw the circuit change from + to - in it's return journey to the battery?
I Make Captions Instead Of Being Productive (11 месяцев назад)
help me polarize help me polarize help me out. my friends and i got physics problems. da-da-da-datda dadatda da-da-datda we have problems
TheTheaterThug (1 год назад)
Aslam Mikrani (1 год назад)
what if you insert copper rod... help needed...please
Indra Pal Singh (1 год назад)
very nicely explained
Luismi San Martín (1 год назад)
Thank you so much for this amazing video
Dev Patel (1 год назад)
Great ..best ever seen
sana mariam (1 год назад)
It's just amazing....super....
Palli Ganesh (1 год назад)
thanks bayya
Koh Zhi Ming (1 год назад)
holy shit this is so much clearer THANKSSS
amigos folks (1 год назад)
how can anyone on earth dislike this vedio, like... it's so goooood😭
Smitha Bhat (1 год назад)
placing dielectric in frst case...without using battery...how can the charges remain the same when there is cancellation?
anurag mittal (1 год назад)
Please Clarify : In parallel capacitor having two dielectrics with relaive permitivity X1 and X2 and distance "D" between plates . Now voltage "V" between the plates of both capacitors is same , but electric field in both dielectrics will be different due to different dielectrics ....than how come DE1 =DE2 = V ?? ( E1 AND E2 are feild in different dielectrics) what is wrong here???
Diya Ayid (1 год назад)
This literally made me realise how useless my textbooks really are! Great video, precise and clear..
Junaid Ansari (1 год назад)
Tasmia Shamshad (1 год назад)
it helped me so much...!
Abhijeet Sharma (1 год назад)
Speechless ⚇.. It's amezing.. Wow.. Thank you.... Thank you so much..
Maso The Ripper (1 год назад)
It's decided, I luv yu m8
Omar Faruqe Riyad (1 год назад)
Thanx from Bangladesh 💜
Darren Miliband (1 год назад)
excellent video.
sk zafaruddin (1 год назад)
Binamra Basnet (1 год назад)
Thanks khan academy from NEPAL
aryen sujjan (1 год назад)
awesome video especially that part you explained how dielectric cancel charges on plates is just amazing
ISHAN Eragon (1 год назад)
Mahanthesh Shetty (1 год назад)
shabarish d rao (1 год назад)
14 bitches feel they can teach better
Shreya Rajgopal (1 год назад)
Isn't capacitance independent of voltage ?
Momoring (1 год назад)
Yes, he is showing the capacitance increase after dielectric was insert.
The Master_Mind (1 год назад)
yeah it is but in this video he shows you what happens BEFORE and AFTER inserting dielectric material. Inserting dielectric material changes capacitance
Akash Stephen (1 год назад)
You are god mate!
Dima Abed (1 год назад)
Thank you very much! I definitely feel better right now towards my physics exam tomorrow because of this great video! Hope I'll do good and if I do, credits will be to you Mr.SantoPietro!
DIvya Singh (1 год назад)
Thanks for help
Henri Quartier (1 год назад)
Now, watch the video again and imagine it's a rap song. Best rap solo you'll hear in weeks, no doubt.
Henri Quartier (1 год назад)
Great video tho.
sujal pandey (1 год назад)
Great!!!! Hats offf sir
Sammy Rose (1 год назад)
why can teachers blabber on about stuff for weeks and make no sense compared to a 6 min video???
panda (1 год назад)
I spent hours trying to understand this but now I fully understand it in under 7 mins!!! Feels good man. Thank you for the awesome video :)
ansh anuragi (1 год назад)
but i read that capacitance does not depent on charge and voltage.😐
Deborah Daoud (1 год назад)
im crying you are amazing and so passionate about physics wow
gary abbot (1 год назад)
Why do videos say the charge in the capacitors is the same as the battery? don't capacitors have a limit?
Haritamanna Kaur (1 год назад)
thnks it cleared my doubts
Yasir prince (1 год назад)
thnxx buddy.. keep it up. 👍👍👍
Craig Slingsby (1 год назад)
Brilliant video; well explained and easy to understand. Thanks a lot!
Julien D (1 год назад)
i need the jammin ass song in this lesson
Harshvardhan Mishra (1 год назад)
Lit !
Kexin Lin (1 год назад)
An awesome video!

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