MH's ideal coil and voltage question

[Magneticitist]

There ya go. Resistance is a necessity for current to flow. Lol 

Mags

I have actually always believed this and it's hard for me to think otherwise.
I can't help it no matter how foolish it may seem.

[Magluvin]

In all this, we havnt considered a load to be included. If we have the ideal supply and ideal wires and just a normal dc motor, then what? The ideal supply produces 12v and the normal motor is rated at 12v. So if current flows, we could run those wires a very long distance with no loss.  So if we had the ideal supply and ideal say twisted pair run out to say 10miles, would there be 12v potential available at the end of those wires and would the motor run? Now I might think that the twisted pair would act like a cap, so there should be potential at the end, 10 miles down the road.

lol, soo if we twisted our wire first and then connected it to the ideal supply, would there be the end of the universe event?  And even if we ran 1 wire N 10 miles and the other S 10 miles to reduce the capacitance as much as possible(and lets idealize that it was done in an ideally empty universe will it ever end) there would still be a capacity. So Boom I suppose.

There must be a need for ideal current limiters??    Gees. Im going to think about this stuff every time I see or hear the word 'Ideal'

Mags

[Magluvin]

I have actually always believed this and it's hard for me to think otherwise.
I can't help it no matter how foolish it may seem.

I have said it before also, considering...    Im just lol that someone else finally said it.

Mags

[poynt99]

So the questions i have for you MH are
1-how is the current time constant calculated for your ideal inductor/

Like any other inductor.

2-What is the time taken for the current to rise to peak value from T=0,that moment when the ideal voltage of 4 volts is placed across the ideal inductor?.

Indeed this question is germane to the original question, What is your answer?

[massive]

 
the question has 5H , time secs and +/- volts given , and zero volt crossing



1H = current changing @ 1 A per SECOND resulting in emf of 1V across an inductor