Capacitors in AC Circuits with Phasors | Doc Physics

This continues the previous video's adventure into phasors and how handy they are.

[@TheFootbaldd]

From someone who was a electric plant operator to EE student, I think you are doing an excellent job explaining. In class they tend to want to reinvent the wheel, so I am finding your videos a good review that helps to connect the two.

[@DocSchuster]

And I love how interested and engaged YOU are! Thanks!

[@justabeardedguythatisahero9848]

hi doc great vid

[@Maskva1825]

I graduated from college with degree in electrical engineering very long time ago. I needed to refresh my stagnant knowledge. This is the only video on KZbin that made sense. Thank you!

[@neonnebby7370]

"Everybody likes resistors cause they're super simple." YES.

[@adaneitor]

One of the best videos i have seen in my entire life

[@AbhilashThulsidass]

Shoutout from India! You are making me fall in love with physics again through your videos. Really appreciate it. BTW, 'morrow is my finals. LOL.

[@JK-bp9fh]

how did you do 5 years ago and what are you doing now

[@thetech685]

I am watching this video 8 yrs after it's release and this is still better than what my profs explain at Uni. Love your excitement and casualness in the video!

[@jeffb.6470]

Your descriptions of the capacitor in a circuit is great. The sound effects you include take it to a level above and beyond any other similar lessons I’ve attend in university or online. You are an incredible teacher! Thank you :)

[@jonjanick6529]

from 15:35 to 15:45 i had an incomplete idea of a capacitor in ac....after 15:45 all the understandings i have about caps came together thank you man, i appericate how you teach and applaud your methods Thank you so much for that visual explanation!!

[@duanebarry2817]

The demonstration with rotating phasor template over the x-y axis is really helpful. It's something textbooks can't really capture.

[@johnsonmid003]

Just learned a month and a half worth of physics in one evening--and to think that I actually went to all my physics lectures. Thanks, you taught me five chapters more than my college professor did. If you get me an A on tomorrow's exam maybe you'll get my next tuition check (but probably not).

[@yourediet]

🤣

[@babbalgts]

from India.....DOC...your videos helps me UNDERSTAND these stuffs....in our school....they teach these way too fast....which i cant grab at all..but from your videos....the way you teach...that so fun...loved it..thanks a lot!!

[@benjtheo414]

Just wow, 2 years of education. Never had such a clear explanation. Thank you very much!

[@Ncik666]

Thank you so much for these videos. I was having a lot of trouble with how my instructors described this, and yet in 15 minutes I feel like I understand it far more than 2 hours of lectures. Saving my bacon for this course!

[@DocSchuster]

Thank you for the blessing! I'm happy you like the videos!

[@christiantoste2295]

sir, you saved my life. I was paralyzed from the neck down. Your video played on my computer and I miraculously got up out of my wheelchair and turned it off. Thank you.

[@madinkan]

Brazil here. Your videos are a real help. Thanks Doc.!

[@christopherkhill3213]

'Visualized, Verbalized, Simplified and Charismatic: `Gifted Teacher.

[@dreamlanddon]

this is the kind of intuitive explanation I was looking for. God bless you teacher! I Appreciated!

[@MattyTeare]

BOOM! Now the capacitor is fully charged :) I love how engaging and interesting you make it, thanks

[@E13ctric1an1]

Thanks!

[@AnkitaMisraBubblesAllAround]

Doc, Hello all the way from India. YOU ARE A LIFESAVER.

[@geoptus]

Love the presentation style (and sound effects) - very clear and informative.

[@mariamtaha371]

thank you , I started to love physics again , you make it very simple

[@reyg8085]

"Okay, we can go up!" Love your videos!

[@officialbankz3900]

graphs really simplified that equation, thanks doc

[@annonymousfox7515]

Nice video man! The explanation on how the current leads the voltage was awesome! Finally get the effect of a capacitor in an AC circuit!

[@snatchgrip]

Thank you very much for making such simple and to the point tutorials! :)

[@nomanmalik5215]

Respect from Pakistan. You're an amazing teacher :)

[@Burrahboy]

Another excellent video following up on the RMS video. Thank-you for making this knowledge available in a simple explanation. As Einstein said, if you cant explain it simply, you don't understand it well enough.

[@joonahulkkonen8346]

Great videos! You really explain the phenomenons understandable way! Thank you!

[@yanivgardi9028]

Your videos are brilliant! You make everything sounds so simple...

[@lonelyheart871]

thank you very much for those videos .. they are very helpful in explaining the equations to what is really happening in physics .. Now I can understand what is really going on capacitors and inductors

[@DocSchuster]

I'm so glad!

[@pierrec9287]

16:19 "ooook we can go up!" I cant help but laugh and learn at the same time! amazing teaching skills!

[@unicore239]

Insane lecture! THE BEST on youtube for this topic

[@harramkhan5112]

THANK YOU DOCTOR YOU'RE A LIFE SAVER

[@sarthak9609]

Harram Khan Jihad

[@juliuscaesar635]

Sarthak Ashok shut up.

[@taamardhwaj]

7 years and still this video saving peoples

[@geetagyasandeepmanuja1612]

Awesome job!!! Today I understood what I had been mugging up for 2 years!

[@DocSchuster]

You bet! Glad it helped.

[@sivebaartman9001]

Sir, you are amazing! I UNDERSTAND and infact am enjoying these videos...don't stop!!

[@DocSchuster]

I am glad to hear it! I'll keep posting if you'll keep learning!

[@yemiobisesan6333]

Could you pretty please do a video on how the various types of transistors are configured as amplifiers. I really don't understand how Class A amplifiers work. A background theory on how various transistors work would be extremely helpful. I'm loving all your videos relating to electronics so far. Your explanation is relatively simple and you manage to pack a lot of incredibly useful information into each video. Yet another 15 minutes of my life well spent. NB: Please I am gagging for your help here.

[@DocSchuster]

Thanks for your kind words. Transistors are high on my to-do list, but I'm stalling because I know it's a very important lesson. It has to be perfect. Unfortunately, I probably won't do it before you need it done. Sorry!

[@hootanbadii1799]

Thanks a lot Dr. Schuster. You are amazing.

[@ellyvatedaf]

Whenever I'm looking at the current and voltage waveforms in an AC circuit, all I can hear is doc's voice describing the graphs 'OOkay we can go up!' and 'OOKAy we can go down!"

[@رانيافهمى-ظ3ق]

thank you so much, wish my professors made science interesting and fun for us like you do in all of your vedios..much love from Egypt.

[@Alex-l3l2l1]

It is so easy to follow you you make it very clear and easy ! Thank you

[@geraldinebass1389]

Awesome explanation, thank you so much!

[@joebarker7643]

This really brings things into perspective, thank you!

[@leonex606]

doc thank you so much for everything you do for us. seriously you are saving people asses right here ^_^. all the love and respect to you sir

[@صيانةالسياراتعلموخبرة]

very good explanation,I think that whenever the source voltage decrease the capacitor will discharge current to the source trying to prevent any change in volt, also whenever the source voltage increases the capacitor will absorb current to prevent any change in volt

[@MrAlbashiri]

Crystal clear. Thank you very much for that amazing explanation

[@gurupamosikwibowo5676]

Thanks for saving my life in EE

[@CodyShell]

helpful for circuit analysis! i unfortunately had a horrible teacher that taught solely by powerpoint slides, which doesn't quite work for me. glad i can catch up here

[@Etinraj]

helloo from India. Great way of explaining Doc. Keep up !

[@ren_6130]

Greetings from Malaysia! Great video! =D Keep it up, Doc Schuster!

[@ThomasTurkington]

You are the best! Simple and interesting!

[@DocSchuster]

Yeah, I don't know any students who learn best by powerpoint. It's quick, easy, and organized, but I think it often doesn't meet its goals...

[@honeybunny2411]

Very nicely explained

[@rockyquadres]

Hi Sir, Namaste! You have really made the things to look very simple.....thanks

[@mack_raymond]

If I saw you, I would give you a high five. Thanks!

[@Diegofreelite]

This dude´s the greatest.

[@kyubeenkim9360]

Amazing explanation, thank you so much

[@pradeepchadha8365]

thankeww sooo muchh sir ! You rock! n ur videos help me alottttt! -Prashsti (India)

[@DocSchuster]

My students do know about real batteries vs ideal V sources, but I could do a better job noting that here. On item 2, you're totally correct. That was not well planned! I just grabbed some phasors and slapped them together.

[@مرتضىصبري-ب4ج]

I like your way in explaining

[@kamalesha.p6965]

Greetings from India!.Thanks for making these awesome series of videos :)

[@DocSchuster]

Kamalesh A.P I'm glad they help!

[@binxxx1992]

I really like your teaching style. Thanks a lottttttt

[@DocSchuster]

I really like your commenting style! You're greatttttttttttttttttt

[@binxxx1992]

:) hahah

[@adrianaharisya1257]

Lots of love for this video

[@franciscoalvarez5215]

Excelent lecture. Thanks a lot.

[@kiriInvestigator4597]

Great video! Thank you

[@backerj11]

you should do these videos with and without calculus; my university does not require calculus for intro physics (which is where we learn this). University of Alberta represent. Ps. Thanks your videos have been helpful!

[@minanovkiril]

you have very good lectures.

[@m.huzaifam.siddique8016]

You are cool man. Good teaching skills

[@farahtarek4237]

Umm it's 2021 and WOW! Thank u so much ❤️

[@deepanshuchauhan5409]

dude ur awesome... I started loving physics

[@arunk8663]

Wow very nice explanation thanks a lot

[@madhuganji8618]

great explaination.i have a doubt .by applying ac or dc we are getting same mode of charging and discharging,HOW?

[@waltersono2742]

Thanks Doc!

[@StephenNu9]

Excellent presentation. If one has an RC circuit, then the continual phase shift continually refreshes the capacitor, enabling it to maintain voltage? I'm wondering if you are going in that direction?

[@musicbyvec1955]

This video was lube for the gears in my mind.

[@dennismolina2339]

great video!

[@yousfiibrahim6863]

This is the best guy ever smart and funny

[@chadbrewer1513]

very well said

[@emptyblank9943]

really love your video👍🏻😁

[@joonastuovinen4106]

Thank you!

[@kumarayushmittal2099]

even in 2022, its really helpful!!1

[@power-max]

I like to say that the current is related to the slew rate, (how fast the voltage changes) because I = c * dV/dT. The integral form, which says that the voltage across the capacitor is proportional to the accumulation of current over time) is just the inverse, but I hate integrals :P! And I think thinking that way is a bit harder. Do you like the analogy of capacitors to pressure tanks, where capacitance is like the size (volume) of the tank, voltage is like pressure, and charge is like the mass or number of air molecules in the tank. Of course the analogy breaks down when dealing with non ideal gases, factoring in temperature, molar mass, things like that. But other than that, I think it is pretty solid! Even mathematically because the density formula and the Q=CV formula are the same.

[@1994yaksh]

Hi , it's a nice explanation about capacitors , but i didn't get one thing that why does the capacitor at low frequency is open circuited ? and at high frequency it is short circuited , ?

[@Cyno94]

Thanks for the video, very informative

[@endrestory4345]

Nice video. Thanks

[@bhaskars6667]

Heyy DOC your videos are awesome!! please post some videos on power electronics!!

[@mikeautostudent5562]

thanks for your video.why they draw polarity for caps in ac circuits? esp for run caps Motors

[@akshatsharma7339]

DOC I LOVE YOU.

[@prudvimanoj9010]

nice explanation..

[@roms_jr]

Thank you so much!

[@mohfa1806]

Hello Doc , congrats on your videos , very professional and you have talent to deliver the information in a simple yet scientific way . I have a question please : when a capacitor is in parallel with an AC voltage source of Vs=4sinwt lets say , then the voltage across the capacitor is also Vc=4sinwt , my question is as follows : as we know the capacitor will charge during the first quarter of the and discharge during the second quarter of the voltage source , and this process will repeat during the negative third and fourth quarter , however i wonder if we say that Vs=Vc then at any instantaneous time the voltage across the capacitor is equal to the voltage across the voltage source , however the capacitor is actually charging and discharging and its actually "following" the voltage source path , so at any instantaneous time the voltage across the capacitor is always a "little" less than the voltage source , so how we can say that Vs=Vc ? ; or isit just an approximation that is acceptable since the voltage difference is always small ? ......thank you very much

[@ylli224]

In that AC circuit with the capacitor as you explained (cool stuff), I would like to know what would happen....is there a power consumtion if a load is introduced anywhere in between?! Thank you

[@DocSchuster]

You betcha. A resistive load, I suppose? You'd need the next video, on impedance. Keep rocking!

[@md.shuheburrahman658]

Thank you so much,,,,

[@carlosnoriega7296]

What would the source voltage curve look like in the same graph of the current and voltage of the capacitor?

[@dontbother665]

Awesome!!

[@Prabh_cc]

Good one....