Yuri,
I think you would better understand what is happening
if you view the inductance in question as half of
a transformer, where the other half is the aether.
This allows you to bring in the formular NxI one side =
NxI the otherside. This way you can see that I is constant.
If it wasn't a constant then the lines of flux would have a
very distorted shape at one end of the inductance.
The fact that transformers have impedances that are not
totally resistive is because of other factors than Inductance.
If I am incorrect with this analogy I would apreciate any
corrections as I am sure Yuri would to
Art



oSaddam (Yuri Blanarovich) wrote in message ...
Question to Roy,
can EZNEC model loading coils in loaded antennas, like mobile whips including
the physical properties of the coil?
I just had some exchange with W8JI on eHam.net
http://www.eham.net/articles/5998
where he is ignoring the fact that loading coil is part of the radiator and its
physical properties, where length to diameter ratio have impact on the current
distribution in the coil.
He is claiming that modeling programs confirm his statement that the current is
the same at the both ends of the loading coil (close in short coils) . I am
having hard time to see how the modeling program is capturing physical
properties of the coil besides inductance, Q etc.
W9UCW has done considerable amount of work on the subject and has measured that
the current diminishes in the loading coil away from the feedpoint.

Thanks!

Yuri, K3BU