Figure 11. The effect of coil current on the magnetic force between the winding and the magnet, the effect of the coil current is linear to the magnetic force because we assume the coil current is uniform

From

Magnetic Force Calculation between Magnets and Coils

Ali Jebelli, Arezoo Mahabadi, Mustapha C. E. Yagoub, Hicham Chaoui

International Journal of Physics. 2020, 8(2), 71-80 doi:10.12691/ijp-8-2-5