Re: Basic Question

In sci.physics.electromag, extremesoundandlight@[EMAIL PROTECTED]
> wrote:

> use carbon nano fiber as the wire its thin and can su****t a
> tremedousely high current and voltage witch is directly pro****tional
> and inversly pro****tional to resistance.

Ummm....using any wire of any thickness and a given resistance per unit of

length, why is it that more voltage will yield more current? Is it a 
matter of velocity of electron flow?  
 


Why, for example, does one needs to use thicker wires on the low side of a

transformer, while on the high side, one can use thinner wires?



I'm not asking to be told that the resistance of the thick wire is lower, 
so by applyng Ohm's law, we see that....

Instead, I'm asking what is going on at a particle level.  And 
additionally, as a corollary question, I'm asking whether the associated 
magnetic field propogates down the length of the wire at a greater 
velocity at higher voltage.  

-- 
The whole problem with the world is that fools and fanatics are always so 
certain of themselves, but wiser people so full of doubts.
	-- Bertrand Russel