Why voltage lags current in a circuit of pure capacitance.

[@BW-ux6kt]

Thank you for the explanation. Was struggling to understand, felt stupid, a pretty easy concept. Thanks a lot

[@howtocreateresilience7009]

This is a really good explanation. I already figured this out, but this is how I think it should be explained always, since it is extremely simple to communicate, but it seems to often be very poorly communicated. Good video! Peace.

[@piyushsoni4100]

You did a magic in less than 5 minutes. Thanks a lot.

[@rodynady6208]

Thank you so much . You exactly explained what I needed to understand . Your explanation is perfect 🔝🔝

[@erikjusufm]

Just an excellent explanation, nothing more nothing less :)

[@Akarsh-]

Simple, clear & short! Thank you ❤️

[@thesmiler119]

Really really needed that. Very conceptual.

[@TheElectricAcademy]

Glad you liked it! It’s my goal to make these concepts easy to understand

[@hammadsafder5435]

Very very well explained ❣️ Thank you.

[@naiyerabbas6481]

nicely explained. I had confusion regarding ac through capacitor and inductance. Now it's gone. Thank you

[@deepakjanardhanan7394]

What about source voltage and voltage across capacitor? Are they in phase or capacitor voltage lags behind?

[@MantisRay861]

Fantastic! I knew the saying CIVIL, but I didn't know how to logically figure it out.

[@aamirmasoodabbasi9660]

i also now know

[@josepeixoto3384]

a few yearrrs laterrrr.. Where in the circuit is that? anywhere? is that in AC only or in DC too? but is it the opposite right inside the capacitor,or not? how hard would it be to show all that in an oscilloscope?

[@carultch]

Does voltage really "lag current" by 90 degrees? Or does current just lag voltage by 270 degrees? I know they are the same result in steady state, but I'm speaking in terms of cause and effect.

[@stikndip]

carultch actually, current leads voltage by 90 degrees. 😊

[@cck0728]

Excellent. If current changes it's direction, than why don't fan changes its direction as per frequency? Thanks.

[@shubhumchatterjee]

The Answer Is Motor Is Responsible For Running Of Fan , So As Long As Motor Doesn't Change Direction, Fan Will Keep Moving In Same Direction

[@cck0728]

​@@shubhumchatterjeeThanks but my question is about motor (voltage/current)? Thanks.

[@shubhumchatterjee]

Yes The Motor Runs On AC Current and The Current Supply To It Changes It's Direction. I Think Your Question Will Be Know That Why The Motor Direction Is Not Changing? It Is Because, The Motors Require Mechanical Power To Change It's Direction and Current Direction Cannot Change It.

[@shubhumchatterjee]

@@cck0728 If Your Question Is Then Why Can't We See The Change In Direction Of Current? The Fan Should Once Start , then Stop and Then Again Start? But It Remains Constant! This is because AC Current Has Supply Frequency Of 50/60 Hz(Depending Upon The Country) . Hence In Each Second, The Fan You See Running Is Actually Starting or Stopping 50/60 Times But It Is So Fast That You Are Unable To See It With Naked Eyes

[@cck0728]

@@shubhumchatterjee Thanks for the clarification.

[@curiosity551]

The fact I don't understand here is that how does the current be at max value even when the voltage is zero? this doesn't follow the ohms law right?

[@aaqibbhat7500]

r!shi kesh Capacitor voltage not source voltage.. Capacitor initially behaves as short circuit (vc=0) hence maximum current.. When the current flows ,it charges capacitor And voltage is developed across capacitor Capacitors needs current to develop voltage. When the capacitor reaches at maximum voltage i.e (source voltage ) current will become zero

[@curiosity551]

Aaqib Bhat oh..i see! the phase shifted voltage and current waveforms are just those across capacitor. please explain me same about inductor. In case of inductor when voltage is at zero current is negative maximum how does that work? Is it due to back emf?but how would the back emf exceed source voltage and cause current to flow in reverse direction?

[@aaqibbhat7500]

r!shi kesh Inductor oppose any change in current. Inductor is like inertia it opposes the change. Initially let there is no current goin through in an inductor when u connect it with source the current does not come instantaneously .Imductor opposes the change (it tries to oppose the current from flowing ) hence current will be zero and voltage will be maximum .Then current starts building and voltage decreases.At maximum value voltage will be equal to zero. (Inductor opposes due to back emf there is no such thing happening backemf exceeding source voltage, negative current means polarity is changed). In DC circuit inductor behaves as short circuit because there is no change in current (but it opposes when u turn ON and OFF switch when u ON it tries to stop current from flowing and when turn u off switch it tries the current continue to flow in same direction as it was going before)

[@theeachuisge]

Then if current is needed to develop a voltage, what's the role of voltage once it is developed?

[@nikhilnegi9446]

Aaqib Bhat in DC source, inductor does not behave as short circuit,,,instead ,,,it behave as a normal wire. Condition -when DC current is steady.

[@victormaxwellpeters9771]

Why current is maximum on positive side but in case of an inductor current will be maximum in negative side??

[@Squire1998]

You said that in order to get a difference of potential, Current has to flow. I thought it was the other way around? I thought in order for current to flow, you had to have a difference in potential?

[@rhythmandacoustics]

Ohms law

[@McCurtainCounty888]

When a source voltage is shorted, positive and negative bolted together, .measured voltage is 0, voltage is present but can't be measured, that's essentially what happens when a capacitor is first connected to a voltage source, as the current fill the plates , voltage reestablished itself and can be measured . The scope will show 0 voltage until the plates begin to fill, this is what causes measured voltage to appear to lag. In summary you are correct current cannot flow without voltage.

[@abdullahsamir815]

Excellent ✌

[@shashidhar.p1289]

Once again brilliant

[@jonathan3976]

Thank you, this explanation helped :)

[@mahalakshmivenkatachalam5311]

thanks buddy.👍👍👍👏👏👏

[@marcusroth4272]

akronym ICE= first current( I), C= capacitance , E= then Voltage

[@SultanNaeem]

GOOD Please Subtitle Your Videos

[@kafilkafish2152]

I was kinda hoping to see values.

[@stikndip]

Kafilkafish The values don’t matter. The time constant depends on the voltage and capacitance though.

[@kennethmeisner2970]

why is noone using this thinking view at eee faculty, its so understandable

[@anastasiaanautodidact9856]

AMAZING!!! PS: lots of derivatives/slopes XD

[@praveenprabhu1284]

you are god

[@ahmednor5806]

🙏🙏🌹🌹

[@kousikmridha9785]

Improve sound quality.its so bad.can't listen to it without external arrangements.

[@fitofight8540]

You should have used calculus to explain this

[@weavercattleco]

Current doesn't flow across a capacitor. If it does then you have dielectric breakdown hence the capacitor isn't doing it's job 🤣 The only thing that comes to mind after watching this crap is the blind leading the blind. Also, your drawing in the video has the current lagging the voltage 🤯

[@ali_syafaat22]

I'm not understand because i can not understand speaking English 😭

[@AndrewCook7]

Excellent video. It's V =I xR 😂