After 2:51: Just remember the word CIVIL: for a capacitor C the current (I) leads the voltage (V), but the voltage (V) leads the current (I) for an inductor L.
Great explanation and illustration of how the voltage across an inductor is related to the rate of change in current through it and not the magnitude of the current.
The Army also taught us to visualize a cap as a short as electrons rush in to charge it as E increases. And magnetic flux resists electron flow in L, as E rises. Never forgot that either.
Hello, I'm just after finding you and your videos. I'm wondering if there's any chance you can make some kinda playlist with all of your electronics videos please. Finding it difficult to find them amongst everything else.
i have very mixed feelings about this channel, very happy that someone puts that much effort into videos and the overall quality of the content, and really sad that it doesn't get the amount of recognition it deserves.. Either way.. Cheers, good stuff!
Thank you for this Two quick questions: - would a bifoilar coil connected continuous to itself with a stored magnetic field be likened to an inductor or capacitor? Hopefully I asked that correctly -also you look similar to the fella that has the majorprep channel and thought emporium is there relation? Thanks for your time and efforts
Hello, This comment is kind of a hail mary, but I figured I’d try. I’m working for a consulting firm where I am beginning to do electrical engineering tasks (I am a mech eng graduate). One concept is bothering me - in my circuit textbook it often describes in a problem how I am “delivering” 80 W of power and “absorbing” 60 VAR of magnetizing power. It then says that my overall complex power has a magnitude of 100VA. Maybe it’s a language interpretation but if I am “delivering” but also “absorbing” why do I still need to provide more apparent power? Doesn’t “absorb” imply that I am being “helped” by the magnetizing VARs? This is for a capacitive circuit - for an inductive circuit it makes sense that I have to provide additional VA to power the magnetic field but in this case the math makes more intuitive sense. Thanks, Brian
Can someone help answer and explain this question? A coil and a capacitor are connected in series across a 120v. The coil has an impedance of 232 Ohms at a p.f of 81deg lagging. The capacitive reactance of the capacitor is 150 ohms. Calculate the V across the coil and voltage across the capacitor.
I believe that is true because during that time the magnetic field is being "built up", thus it is taking energy from the circuit causing the wave to be negative. Then after, the magnetic field "collapses" and gives back the energy to the circuit, thus causing the positive energy section of the sinusoidal wave.
It's because the teacher used the convention to choose time t=0 when the current in the circuit is at max (he talks about this convention in a previous video, I can point you to that video if you want). That means that at t=0, because the current is at max the inductor's magnetic field is at max too (the inductor is "charged"). It's as if the circuit was running freely forever but we chose to start our stopwatch (t=0) when the current is at max.
Hi sir my name is Krishna.. I am running 2generator parallel with50% load .load share equal current and power also power factor ...but why Q Power one generator +Q power others generator _Q power why?? But some time ok
I searched and didn't found here. Maybe someone has a ride say that before me but and music sheet for remembering the lags and leads voltage and current stuff is a mini monic data found on Wikipedia civil civil which means faster current leads voltage and 40 v i l is voltage leads current in inductive load okay so L for a Kyle or inductive load C for a capacitor V for a voltage and I for current and that's how I remember that always. It works fine for me hope it works fine for who ever is rating.
This talk doesn't comply with reality. He claims a current thrue an electromagnet doesn't do any work ?? And he even doesn't talk about compensations. Therefore he likes it's theory ?
I dont think that is what he saying.. Indeed, work is done to move the charges to the inductor. And work is done to move the charges from the inductor back to the source.. I would say the potential energy is transferred back and forth between the source and inductor.. No power is actually used. Is that what you're questioning?
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Sir, you have done this subject as easy as possible for me and for my friends so, you deserve a great thank 🎉🎉🎉❤
After 2:51: Just remember the word CIVIL: for a capacitor C the current (I) leads the voltage (V), but the voltage (V) leads the current (I) for an inductor L.
My pal Eli the Iceman told me that one.
omg i'll never forget this now
Great explanation and illustration of how the voltage across an inductor is related to the rate of change in current through it and not the magnitude of the current.
The Army also taught us to visualize a cap as a short as electrons rush in to charge it as E increases. And magnetic flux resists electron flow in L, as E rises. Never forgot that either.
Excellent explanation about power behavior in the inductor. It is a difficult concept to learn alone in the books. Thank very much.
Hello, I'm just after finding you and your videos. I'm wondering if there's any chance you can make some kinda playlist with all of your electronics videos please. Finding it difficult to find them amongst everything else.
Did you get the playlist,,I’m also struggling to get these videos in order
He should write a book.
How accurate his explanation is!!
Thank you!
@@MathAndScience Can you provide a link to the rest of this series. When I look on your website to buy it, I do not see it.
Or just remember "ELI the ICE man". Therefore voltage leads current in inductive and current leads voltage in capacitive circuits.
i have very mixed feelings about this channel, very happy that someone puts that much effort into videos and the overall quality of the content, and really sad that it doesn't get the amount of recognition it deserves..
Either way.. Cheers, good stuff!
i know. like big football teams. all they do is kicking a ball and they get millions. And good quality games are left with less viewers/money.
Thanks. From Bangladesh.
THANK YOU... SIR...!!!
One of the best teaching videos
I am really enriched viewing the lecture.
Nothing like a good you tube video first thing in the morning to make me feel like an idiot...going to be a great day
Superb sir 👍
Thank you for this
Two quick questions:
- would a bifoilar coil connected continuous to itself with a stored magnetic field be likened to an inductor or capacitor? Hopefully I asked that correctly
-also you look similar to the fella that has the majorprep channel and thought emporium is there relation? Thanks for your time and efforts
Thank you for your help
Good job
The Army taught us it is ELI the ICE man! E leads I in an L circuit. I leads E in a C circuit! Learned that 50 years ago. Never forgot it.
Damn you're an excellent teacher
Thanks sir
Hello,
This comment is kind of a hail mary, but I figured I’d try. I’m working for a consulting firm where I am beginning to do electrical engineering tasks (I am a mech eng graduate). One concept is bothering me - in my circuit textbook it often describes in a problem how I am “delivering” 80 W of power and “absorbing” 60 VAR of magnetizing power. It then says that my overall complex power has a magnitude of 100VA. Maybe it’s a language interpretation but if I am “delivering” but also “absorbing” why do I still need to provide more apparent power? Doesn’t “absorb” imply that I am being “helped” by the magnetizing VARs? This is for a capacitive circuit - for an inductive circuit it makes sense that I have to provide additional VA to power the magnetic field but in this case the math makes more intuitive sense.
Thanks,
Brian
This is phenomenal
Effective way of teaching! Thankyou 😊
Can someone help answer and explain this question?
A coil and a capacitor are connected in series across a 120v. The coil has an impedance of 232 Ohms at a p.f of 81deg lagging. The capacitive reactance of the capacitor is 150 ohms. Calculate the V across the coil and voltage across the capacitor.
Great work 100/100
I can't believe that, as a non engineer, I understood this lecture.
hi, great job, but i have a question : the power starts negative?
I believe that is true because during that time the magnetic field is being "built up", thus it is taking energy from the circuit causing the wave to be negative. Then after, the magnetic field "collapses" and gives back the energy to the circuit, thus causing the positive energy section of the sinusoidal wave.
Thanks 😍
The intantaneous power is not time dependent. The proof is given in this video.
thank you very much
I have a question
how the inductor deliver a power to the circuit from 0 to π /2 before it absorb from the circuit?
It's because the teacher used the convention to choose time t=0 when the current in the circuit is at max (he talks about this convention in a previous video, I can point you to that video if you want). That means that at t=0, because the current is at max the inductor's magnetic field is at max too (the inductor is "charged"). It's as if the circuit was running freely forever but we chose to start our stopwatch (t=0) when the current is at max.
@@RockyBoltzano thank you very much
I have understood it
Hi sir my name is Krishna..
I am running 2generator parallel with50% load .load share equal current and power also power factor ...but why Q Power one generator +Q power others generator _Q power why?? But some time ok
is there a video where you prove the "grand daddy power equation"? i'm struggling with a text book i have that does the proof of that.
Sir, so many thanks, i got an exam in a few days and I got a very bad teacher.
Good luck in your studies!
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how do inductors deliver power at (t)=0, wouldn't the inductor need to acquire energy first before delivering it to the circuit?
Yupp I was thinking that also casimier effect
Think a mistake was made with negative power at time zero for inductor
I searched and didn't found here. Maybe someone has a ride say that before me but and music sheet for remembering the lags and leads voltage and current stuff is a mini monic data found on Wikipedia civil civil which means faster current leads voltage and 40 v i l is voltage leads current in inductive load okay so L for a Kyle or inductive load C for a capacitor V for a voltage and I for current and that's how I remember that always. It works fine for me hope it works fine for who ever is rating.
Is this for forth grade
No but your spelling is.
Hardly.. He's a great instructor who is explaining complex subjects in understandable terms.. Excellent..
This talk doesn't comply with reality. He claims a current thrue an electromagnet doesn't do any work ?? And he even doesn't talk about compensations. Therefore he likes it's theory ?
I dont think that is what he saying.. Indeed, work is done to move the charges to the inductor. And work is done to move the charges from the inductor back to the source.. I would say the potential energy is transferred back and forth between the source and inductor.. No power is actually used. Is that what you're questioning?