The origin of high-energy cosmic rays, especially those close ZeV, continues to be a profound mystery in the field of astrophysics. Active Galactic Nuclei (AGN), powered by supermassive black holes, emerge as compelling candidates for the source of these cosmic rays. A novel acceleration mechanism is explored, combining electromagnetic forces with centrifugal actions to propel a proton to energies reflective of the potential difference induced by a supermassive black hole. An analytical model is proposed, focusing on a single test proton's trajectory from the close proximity of the black hole to the distant regions of a relativistic jet, covering the entire potential difference. The aim is to illuminate the intricate dynamics within such extreme astrophysical environments, offering insights into the origins of ultra-high-energy cosmic rays.