CCAST, World Lab, Beijing 100080, Peoples R China
; Inst High Energy Phys, Beijing 100039, Peoples R China
; Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany
Based on a relativistic potential quark model approach for the nucleon and Delta (1232), the electroproduction amplitudes of the Delta (1232) resonance are calculated. The important effect of the pion meson cloud is stressed, Different predictions for helicity amplitudes and electroproduction amplitudes are obtained compared to the nonrelativistic constituent quark model. (C) 2001 Elsevier Science B.V. All rights reserved.