The force between two current-carrying conductors or between a current-carrying conductor and a ferromagnetic component is called the Lorentz force. It is sometimes also referred to as electrodynamic force in other languages. On the positive side, the Lorentz force in electrical apparatuses can be used in current-limiting circuit breakers to rapidly separate electrical contacts and drive arc motion, electromagnetic cannons and electromagnetic ejection systems. On the opposite side, the Lorentz force can also cause a strong mechanical impact on electrical equipment, form unwanted arcs, and promote the welding of electrical contacts in switchgear.