2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34138The electromagnetic fields generated by a ring current around a Kerr black hole have been found. The acceleration of a charged particle by a force electric field along the rotation axis is investigated in the constructed model, as applied to the astrophysics of quasars.10 pages, 1 figuresGeneral Relativity and Quantum Cosmologytext