What is coercive force of magnetic material? What is its function? Is it larger or smaller?
Mean for magnetic materials plus how much force will make it less magnetic. Can not generally say good numerical or small, if you need to keep the material magnetic, apparently more good, if you need the material to have magnetic magnetic magnetic magnetic, do not have, obviously smaller.
When the magnetic induction is changed to zero, the force of external magnetic field must be added to the hysteresis curve, which is called coercive force (B=0)