where do electrons flow in a galvanic cell
Galvanic cell In addition, electrons flow through the external conductor, which is the primary application of the galvanic cell.
Reduction potential Any system or environment that accepts electrons from a normal hydrogen electrode is a half cell that is defined as having a positive redox potential; any system donating electrons to the hydrogen electrode is defined as having a negative redox potential.   E h   {\displaystyle E_{h}}  is measured in millivolts (mV). A high positive   E h   {\displaystyle E_{h}}  indicates an environment that favors oxidation reaction such as free oxygen. A low negative   E h   {\displaystyle E_{h}}  indicates a strong reducing environment, such as free metals.