Electromagnetic force propulsion is propulsion that harnesses the interaction between magnetic fields and electric currents to create a force to move an object.
Electromagnetic force propulsion is a method of propelling objects by using electromagnetism, instead of traditional methods like burning of fuel.
The principal of electromagnetic force propulsion is used in various applications which include spacecraft propulsion and MagLev Trains.
The core principal for electromagnetic force propulsion is the Lorentz force, which states that a charged particle moving in a magnetic field experiences a force that is perpendicular to both it's velocity and the magnetic field.
In EMP or electromagnetic fields, electrical currents create magnetic fields and these fields interact with other charged particles or currents to generate a force which pushes the object.
MagLev trains use linear motors where electromagnets in the train interact with a magnetic field in the track to propel the train forward.
In spacecraft the plasma thrusters use electromagnetic forces to accelerate ions which are charged particles to create thrust, allowing the spacecraft to move in space without needing to carry large amounts of fuel.
The experimental device called EmDrive attempts to create thrust using microwaves and a cone shaped thruster, generating a difference in momentum between the two ends of the thruster to produce motion.