Richard Harrison wrote:
The coil which has a great difference between the current at its ends
most likely simply has different impedances at its ends. The power is
nearly the same at both ends of the coil but the voltage to current
ratios are different.

Consider a 1/4WL open-circuit stub. The impedance at the open
is very high and the current is zero.

The impedance at the mouth of the stub is very low and the
current is at a maximum.

Exactly the same thing happens with a coil at the self-resonant
frequency.

The standing wave current at each end of a coil installed in
a standing wave antenna depends upon its position in the
antenna. To paraphrase Hecht, standing wave current "doesn't
progress through a wire - it's a standing wave."
--
73, Cecil http://www.qsl.net/w5dxp