potentsiaalimõõtur, mida kasutatakse elektromotoorjõu mõõtmiseks, tasakaalustades seda potentsiaalide erinevusega, mis tekib teadaoleva voolu läbimisel teadaoleva muutuva takistuse kaudu
potentiometer that use for measuring an electromotive force by balancing it against the potential difference produced by passing a known current through a known variable resistance
