Magnetic Force
Just like charges set up an electric field, and other charges in the vicinity feel an electric force due to that electric field (Fel = qE), we can work with the idea that magnets set up a magnetic field in space, and charges moving through that field experience a magnetic force. There are two things to note:
1. The charges must be moving.
2. The direction of the force is “weird”:
the direction of the magnetic force is perpendicular to the velocity of the moving charge, and perpendicular to the magnetic field direction!