Set-up and procedure
The experiment is set up as shown in Fig. 1, initially without the source. The iron components must be firmly fixed in position so as to ensure a satisfactory and constant flow of forces. The zero point has to be adjusted on the magnetic field measuring instrument, before the tangential Hall probe is introduced through the lateral opening. The relationship between coil current and magnetic flux density is determined. Measurements are carried out in both directions of the magnetic field (see Fig. 3).