This study develops a theoretical model to analyze transient currents in one-electron transfer reactions over rotating disk electrodes for quasi-reversible and irreversible processes. The model employs the nearest diffusion layer approximation, separation of variables, variational iteration, and two-point Pade approximation methods to derive concentration profiles. The techniques not only yield better precision and reliability of electrochemical measurements through considerations of transient currents and background current rejection in solid-state electrochemical systems, thereby improving the precision and interpretation of experiments devoted to rotating disk electrodes. Analytical expressions for the concentrations of oxidized and reduced species are obtained, enabling the examination of how parameters operate on current during the transition between activation-controlled currents. Closed-form solutions for the steady-state background current are also provided. Finally, we concluded that numerical simulations are used to describe and distinguish between reversible and quasi-reversible electrode processes