A toroid shaped inductor of rectangular cross section illustrating the requirements for total confinement of the magnetic B field.<br> Red arrows represent circumferential direction. Yellow arrows represent axial currents. Gold arrows represent radial currents.
<a href="//commons.wikimedia.org/w/index.php?title=User:Xoneca&amp;action=edit&amp;redlink=1" class="new" title="User:Xoneca (page does not exist)">Xoneca</a>
2015-06-26
<span class="int-own-work" lang="en">Own work</span>