Learn how to determine the magnitude and direction of the magnetic force experienced by a charge moving in a magnetic field. A magnetic force is when magnetic forces (North and South Poles) interact with each other. This may be shown by movement (for an example: Your refrigerator magnet attracts, moves toward the fridge, and stick onto the fridge) between these magnetic poles. Magnetic flux is an important quantity, particularly when it's changing. If the magnetic flux through a conducting loop is changing, then an electromotive force is induced in the loop. Why some materials are not magnetic ? Learn Magnetic dipoles & dipole moment Magnetic moment of electron around a proton
