Actually, I allowed the mistakes as I often mistype myself (lysdexia?), so I took the mistakes as non-intentional. In fact, I barely even noticed them.

Regardless, quoting or misquoting an equation does not actually address the question I originally posed nor does it address the issue that a copper screen provides very little supression of magnetic fields at all.

So, would you kindly explain the physical mechanism by which a copper screen around a set of closely spaced conductors would disrupt external EM fields?

L8er T