This page explains how a voltmeter measures electric current indirectly through established galvanometer principles. It discusses electrical potential in voltaic cells, emphasizing that it's measured ...This page explains how a voltmeter measures electric current indirectly through established galvanometer principles. It discusses electrical potential in voltaic cells, emphasizing that it's measured in volts and depends on half-cell differences. A complete redox reaction, illustrated by a zinc-copper cell, determines this potential, with copper ions being reduced due to their higher reduction potential compared to zinc.
