1) The maximum electromagnetic force density
fy, max in sheet appears in the position near the inner radius
of single-turn coil. The position is independent of the
section shape of coil. fy, max for flat coil is larger than that
for long coil or coil with wedge shape section.
2) The effect of the turn number of multiple-turn
coil on fy is dependent on the loop resistance in circuit.
The kind of coil with more turns and larger inductance is
commended while there is the larger loop resistance in
circuit.
3) fy increases in a certain magnitude while core is
located in coil. However, the magnitude of fy is limited
by saturating the magnetic flux of the core