AC voltage across pure inductor (derivation) | Alternating current | Physics | Khan Academy

When an alternating voltage is applied to a purely inductive circuit, the current lags the voltage by 90 degrees. Let's calculate the expression for this current.

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Created by Mahesh Shenoy

[kxrxnz]

Sir please don’t stop and keep posting such videos our country needs ppl like who would spread the kind of knowledge that gives ppl interest in studying unlike the normal coaching institutes

[satheeshkumark]

You are not teaching

YOU ARE CONVEYING ALL THE FACTS RELATED TO A THING THAT AN ORDINARY PERSON THINK HOW IT WILL APPEAR OVER THERE

REALLY HAVE NO WORDS TO SAY

GOD BLESS YOU

[selimrbd]

Your enthusiasm and explanations are of high quality.

Although I'm not sure of your explanation regarding the value of the constant C.
"Because it is a constant, if it is 0 for these values, it should be 0 for any value of Vo" -> that sounds false to me. C could simply have Vo on its numerator, no ?
You can't replace the values of the constants (Vo) when calculating C, you need to determine it for a **particular value of t**. For example, t=0.

Am I missing something ?

[kxrxnz]

Omg Khan academy has helped so much in the last few days it was everything I was looking for

[diyamehra]

❤️❤️ it is amazing to learn these concepts with you
Please upload full syllabus of class 12th

[b.srinivas]

Much needed one in the right time. Thank u Mahesh sir😄

[sokkaml]

I know I aced ac current from my brain, stomach and heart 💖

[gaganpadiyar]

Sir, the back emf at any instant will always be equal and opposite to the source voltage then how can a current flow in the circuit

[isaaksousa]

it's really nice to see someone doing what they like to do

[abdullahjhatial]

if vs and vl are equal then why currrent flow ? if current flow but in which direction opposite to source voltage direction ?

[feelingzhakkaas]

Excellent....it's like a suspense movie.... eagerly waiting for next session

[payalnanwal]

I'm little bit weak in English but but but....your videos make it very smooth
Really amazing ❤

[umujahid]

Amazing work, but is there a playlist for these videos?

[sovi]

Sir, I think C is a constant w.r.t time. I mean c might be a function of Vo. So putting Vo =0 will be inconclusive. Like it might be possible C = Vo/wL . I think a better way to figure out constant would be using the average value of the function.

[jacobvandijk]

@ 3:28 If V(L) = V(S), how can there be any current at all?

[Fateymaa]

Rest of the lecture was awesome but, Can someone explain why the inductor has the same polarity as the battery? Shouldn't it be opposite in order to oppose the applied voltage?

[Praveen_De_Silva]

❤❤❤❤❤Isthuuthiii🎉 thankuuu very much sr❤

[sammalik]

Please make a video which shows how changing electric field produce magnetic field in electromagnetic field

[Festus]

If the source voltage and the induced voltage are equal and opposite throughout the entire cycle, how does current flow at all?

[AtulKumar-eflu]

In my heart in my bones in my stomach 😂😂.