According to Lorentz force, the two parametrized vectors, E for the electric field and B for the magnetic field, defined the electromagnetic force acting on a point charge q in the functional form that moves with a velocity v at a given point and time. And the electromagnetic force is a function of the charge q and its velocity v. In fact, the test charge q would generate its own finite electric and magnetic fields that alter its electromagnetic force. If the charge experiences acceleration, it loses its kinetic energy by emitting light radiation. And the emitted light is forced into a curved trajectory. For more interesting chemistry topics, Kindly visit; https://jayamchemistrylearners.blogspot.com/