Share — copy and redistribute the material in any medium or format
Adapt — remix, transform, and build upon the material for any purpose, even commercially.
Sharing and adapting of the illustration is allowed with indication of the link to the illustration.
A coil through which an electric current flows generates a magnetic field \(B\) which is homogeneous inside the coil. Outside, the magnetic field runs (inhomogeneously) from one end of the coil to the other, i.e. from the north to the south pole.