Abstract: If a charged particle accelerates then it produces both an electric field and a magnetic field. The interaction of particles can be described with the help of the concept of a field of force. When one particle acts on another then the particle creates a field around itself and a certain force then acts on every other particle located in this field. The study of the physical system consisting of charged particles in electromagnetic field constitute a major part of the whole of physics. Here considering the behaviour of a charged particles with some examples of uniform electric & magnetic fields in classical cases by starting with the general laws of classical electrodynamics in the covariant form can be considered.

Keywords: Electromagnetism, Lorentz Force, Covariant form, Gyro-radius, Cyclotron frequency, Helical path, cycloid.

| DOI: 10.17148/IARJSET.2021.8667