2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/133030In order to clear up a question on possibility of a dc voltage proportional to the persistent current in normal metal and semiconductor mesoscopic loops conjectural causes of this phenomenon observed in superconductor loops is investigated.3 pages, 2 figuresSuperconductivityMesoscale and Nanoscale Physicstext