2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/205470We investigate the electric form factors of the nucleon and Roper resonance using a quark-diquark model. We find that the charge radii of the nucleon and Roper resonance are almost the same in size.To appear in the proceedings of Chiral 07, Osaka, Japan, November 13-16, 2007. 4pages, 4figuresHigh Energy Physics - Phenomenologytext