Cores large enough for visual indication of magnetic
field would be in the
10-20AMPS select curent range. Not a real possibility.
Maybe so, but those are practicality issues, not feasibility.
that answer equates to "whatever". Describe the mechanics of displaying
the orientation of a magnetic field in a closed torus? I was trying to
get someone to think on how thjis may be done impractical or not.
Gee don't they have little arrows sticking through the middle like my
physics books show?