Final answer:
Our current understanding is that magnetic fields are generated by the motion of charged particles or by changing electric fields, as described by Maxwell's fourth equation.
Step-by-step explanation:
The current understanding of how magnetic fields are generated can best be described by the motion of charged particles. When charged particles move, they create a magnetic field. This phenomenon is well explained by Maxwell's equations, particularly the fourth equation, which states that magnetic fields can be generated by moving charges or by changing electric fields. This aspect of Maxwell's equations not only includes Ampère's law but also indicates that changing electric fields are another source of magnetism. Furthermore, magnetic force results from the interaction of a moving charged object or a magnet with other moving charged objects or another magnet.