MH's ideal coil and voltage question

[MileHigh]

Forest
yes there is a conclusion [for myself]
Miles is bound and determined to force his will on all that believe resonance a means to an end in the quest for OU.

his goal is to "teach" you away from this resonant OU madness !

and there seems to be no limits to his Stoop..

a very Shameful use of a legacy , just to make a point in a very weak argument [resonance and OU]which holds no true
value to members here.

and is mostly to polish his own EGO...

it truly turns my stomach and I will leave you alone in your "karma" Miles...

This is just more straw man junk from you.

The intention was to discuss what resonance really is and use the example of a wine glass.  And as you saw, many people had no clue whatsoever about what resonance actually is.  Then an offshoot of that was that some people suggested that some things were manifestations of resonance, but on closer examination it became apparent that that was not the case.

And that's pretty much the extent of it.  And you have the nerve to construct this false narrative out of some kind of pro-resonance backlash from a "believer."

You can have as many bloody over unity fantasies about resonance as you want, I don't give a damn.  Have your own pulsations in sync with the pulsations of your favourite Pistol shrimp if that makes you feel better.

What was done was good and informative and you are not going to take way from that with your ridiculous "hurt resonance boy" nonsense.  Pull yourself together and get over it.  What true resonance actually is has been made clear and the next time some flim-flam Joe Blow comes along with a fake resonance pitch and a crowd funding web page then some people will know better.  And if you hate that then go wallow in your miserable well of self-imposed pity, ignorance and stupidity.

[tinman]

And you are still stuck.  Surprise surprise.  The CEMF is identical to the applied EMF.  This was also covered in the thread multiple times.

Plus ça change, plus c'est la même chose.

Really

We shall use this as a reference then-shall we?.


Brad

[MileHigh]

2-What is the cause of the self induced EMF(CEMF) to be of a lesser value than the applied EMF?.

Brad

Here Brad, let's use the differential equation for a coil that relates the voltage and the current to solve for the question:

v(t) = L di/dt

Let's just look at the first three seconds.

We know that the voltage is 4 volts and it is unchanging.   We know that the inductance is 5 Henrys.  So let's just punch in the numbers then.

4 = 5 * di/dt

Let's rearrange.

di/dt = 4/5

Now, what are the units for di/dt?   The answer is amperes per second.

Amperes/second = 4/5

Let's rearrange.

Amperes = 4/5 * second

Let's just rename the variables to make them more familiar.

i = 4/5 * t

i = 0.8t

For t = 3 seconds we get i = 2.4 amperes.

So you see, all of the weeks and weeks of agony could have been answered in 90 seconds flat if you just got up the bloody learning curve and threw away your ridiculous obstinate attitude and your ridiculous preconceptions.

Why am I saying this?  It's because the "v" in v = L di/dt is the bloody applied EMF and the opposite CEMF at the same bloody time.  You are supposed to know this by now but obviously you don't.

[picowatt]

2-What is the cause of the self induced EMF(CEMF) to be of a lesser value than the applied EMF?.

My short answer would be "geometry", with regard to flux cutting/coupling...

Consider a given length of conductor (wire).  Stretched out straight it has a certain, lowest value of inductance.  Coiled up it has more inductance.  Change the diameter and/or spacing of the coiled turns and the inductance changes.  In any configuration, changing the size and shape of the conductor's cross section also changes the inductance.

PW 

[Pirate88179]

I went over the concept with Grum but you won't listen.  Just zone out and think about the Pistol shrimp.

In email the late MarkE said that you were a nutter.  I was a little surprised and taken aback, but I can see now that he was spot on.

That's why I asked you to delete my coordinates and I hope you have done so.  I seriously regret giving them to you.

Keep fighting for ignorance and stupidity.  Have you hugged a Pistol shrimp lately?

This has to be the lowest, most ignorant, vile and despicable posting I have ever read here on O.U.com, and believe me, that is really saying something.  You have set a new low.  I used to have some respect for your knowledge Sir, but no longer.

You have just singlehandedly redefined the word scumbag.

Nice going.

Judging from all of the emails, and postings, I am not alone in my assessment.

Bill