1) A conductor moving through a magnetic field will induce an electromotive force (EMF) in the conductor. 2) As the electrons in the conductor are forced to one side by the magnetic field, it creates a potential difference between the ends of the conductor. 3) According to the law of conservation of energy, the induced current will flow in the opposite direction of the motion that created it, generating a force opposing the original motion as predicted by Fleming's left-hand rule.