MH's ideal coil and voltage question

[poynt99]

Surely you mean to say this with regard to "ideal inductors", as in having no DC resistance...

PW

Yes, of course PW. Thanks for clarifying that.

[poynt99]

I know you did not. But what voltage source is capable of 0v yet provides current to the ideal inductor? Sure we could just say that the inductor has no voltage across its leads but has steady current. But it seems in each case of whether it is current building up, or flat line current, if it is an ideal inductor we are talking about, then one question may come about as to the source. Current is rising in the inductor so there must be voltage across its leads? Steady current but no voltage across its leads? Id say the source needs more definition as to its capabilities in order for those to occur. Wouldnt you?     Its like the ideal source is not just a voltage source whether it is adjustable or not, if it is capable of current at 0v. Then it is no longer a voltage source.. Its just some magical source that is simply capable of anything imaginable. May as well be a source of light also. Capable of coherent laser light output also. Provides mechanical and sound output also. Etc, etc.

We've gone over this a couple of times already, but we'll try to keep at it until it sinks in

An ideal voltage source with its voltage set to 0V is equivalent to an ideal piece of wire. Why then would it NOT allow the pre-existing circuit current to flow?

[tinman]

Brad,

In terms of voltages and currents in inductors, the following is true:

1) If the inductor current is steady (not changing), then the voltage across it must be 0V.

2) If the inductor current is changing, then there must be a non-zero voltage across it.

As i said to MH--i agree with this,and the reason i did not understand as to why you would say otherwise?
Quote: All inductors, whether ideal or real will have a voltage across them when there is current through them, regardless if the current is changing or not.

To me,if a current is not changing,then it is at a steady state,so to me,your statement reads that a voltage can exist across an ideal coil that has a steady current flowing through it.

In regards to the current flow lagging the voltage,i was referring as to why there is a delay in time for the current to rise to a maximum value after the voltage is applied to the inductor.
Is it not the CEMF produced by the changing magnetic field that causes this delay in current rise time?.


Brad

[tinman]

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?

You pall -are the worst of the worst.

How dare you Bring some one that is no longer with us into this conversation,just to try and gain some sort of fantasy fame.

I cant believe even you would stoop so low to try and discredit another researcher-->that has done far more than you to help others in this game.

If there ever comes a time of a full world war,i would have Chet watch my back any time,and know i would be safe.
The only place i see you in that time,is hiding in a cave.



Brad

[MileHigh]

Go blow a gasket in your head Brad, you are overdue.  Chet was being an ass and a schmuck.  I stated many times that we are discussing the true scientific definition for resonance and he can't accept that and wants to be a pain in the ass.  It's not the end of the world that I brought up what MarkE told me, you are just running with what PW said and being a drama queen for show.  I didn't discredit him, I made him face up to his own ridiculous behaviour.  Nor is he a researcher.  If there ever was a war, I wouldn't even trust you to take out the garbage. You have compromised yourself so much that there is nothing left.  You have never made a single mistake in the past three months, it's truly amazing.