Perfect conductor concept - opracowanie

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Fragment notatki:

Perfect conductor concept We take a practical view of the term perfect conductor to mean a material with very high
conductivity, such as a metal, within which any electric field must be negligibly small,
but we can still establish a steady value of magnetic field H and magnetic flux density
B, if we are prepared to spend a reasonable time doing it.
We are thus not discussing super-conducting media from which magnetic field are
expelled through processes different from those considered in the course so far.
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