magnet formulas
Field Inside an Air-Core Toroid Coil
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B is the magnetic field, in teslas. The direction of the field is tangent to a circle on a radius r (in meters) from the center of the toroid. μo is the permeability constant (1.26x10-6 H/m) i is the current in the wire, in amperes. N is the total number of turns of wire in the toroid. |
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Magnet Formulas web site, © 2004 by Eric Dennison. Your comments and questions are always welcome! If you want to be on my mailing list to find out about updates to this site, or if you have any comments at all, please let me know.
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