On 20 Nov, 16:02, (Richard Harrison) wrote:
I wrote:

"The impressed current will lag the voltage across a pure inductance by
90 degrees."

Roy wrote:

"For other waveforms (like the ones you`d get connecting batteries or
capacitors) you have to resort to the more general time relationship
L*di/dt.

Roy is correct for connecting batteries or capacitors but Art was
working wih a lengthy antenna, not a lone elementary segment. He also
had no step functions, just a sine wave driving his antenna.

Best regards, Richard Harrison, KB5WZI

I am afraid it is more than that. Without an understanding of changing
phase angles of both voltage and current you will never understand
antennas. Look back at the comment you made with respect to phase
angle
and then re read Roy's comment where he corrected you with respect to
phase angles. You will just have to refresh yourself with respect to
voltage and current phase angles especially when they have the SAME
phase angle . My guess is you will find it in books by Bailey, Kraus
and ofcourse "you know who". And yes, I feed my antenna with a sine
wave
which by passes a capacitor but what on earth has that got to do with
the subject of batteries e.t.c.?
That sino soidal bypass is often termed "leakage" which is extremely
small
compared to the total energy fed to a radiator that creats radiation
tho necessary for relative phase angles to change.
You made a reference to" 101" for those who went to college well
if you did,then refresh yourself with notes taken
Art Unwin