An electric potential forms in initial cells as a result of chemical reactions between the cell's plates. When free electrons from zinc atoms gather on the zinc plate, a negative charge is produced. Positively charged zinc ions enter the acid. Simultaneously, the copper plate gets positively charged as free electrons are taken out by positively charged hydrogen ions from the acid. For the duration of the chemical reaction, free electrons travel from the zinc plate to the copper plate through a conducting substance that connects the plates. Chemical reactions inside the cell are another way that dry cells generate electric potential. On a zinc can, free electrons that were extracted from the carbon rod gather. The container becomes negatively charged while the rod displays a positive charge.