2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50861We study the brane world cosmology in the RS2 model where the electric charge varies with time in the manner described by the varying fine-structure constant theory of Bekenstein. We map such varying electric charge cosmology to the dual variable-speed-of-light cosmology by changing system of units. We comment on cosmological implications for such cosmological models.12 pages, LaTeX, reference addedHigh Energy Physics - TheoryAstrophysicsGeneral Relativity and Quantum Cosmologytext