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Fields and coils

  • Thread starter Dirk Bruere at NeoPax
  • Start date
D

Dirk Bruere at NeoPax

Jan 1, 1970
0
whit3rd said:
The dipole moment of a flat coil (ignore solenoid length)
will be proportional to current times area

Mdipole = k *N * I * D**2

and the distant field of a dipole is of magnitude

Mdipole/R**3

(that's the far-field approximation, there are other moments
that provide minor corrections).

So, the far-field is gonna be proportional to D squared.

Thanks to you and Tom Bruhns.
So, for a fixed length of wire on both coils, with N obviously varying
according to the diameter, we end up still proportional to D^2, but with
a different constant of proportionality?

--
Dirk

http://www.transcendence.me.uk/ - Transcendence UK
http://www.theconsensus.org/ - A UK political party
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D

Dirk Bruere at NeoPax

Jan 1, 1970
0
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