We disassembled this head. As you can see on Figures 10 and 11, it has two coils inside. These coils are in charge of generating the necessary electromagnetic field for erasing or writing data on the disk and also in charge of capturing the magnetic field generated by the floppy and transforming it into electrical current when data is being read from the floppy.
click to enlarge Figure 10: Floppy disk drive head disassembled.
click to enlarge Figure 11: Floppy disk drive head disassembled, viewed from another angle.
