If the current (-I1) coming out of a small toroidally-wound coil,
effectively of zero length and diameter in terms of a wavelength, is
different in magnitude from the current (I2) going in at the other end,
where is the make-up-the-difference current (I3) coming from?

I1 + I2 + I3 = Effectively zero.

To where is the I3 wire connected ?

Or is Kirchoff finally going out of fashion according to some noisy,
baffle-gabbing, old-wive-contributors to this supposed educational newsgroup
?
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Reg.