To demonstrate how an electric cell is formed.
Electric cell kit with sample materials, projection voltmeter.
A container is filled with a dilute solution of HCl, and various pairs of electrodes can be inserted into the electrolyte solution. The voltage is measured using the lecture meter. A standard electrode pair is copper and zinc.
S. Mascarenhas, F. Gambirasio, and Y. Mascarenhas, CO2 Electrostatic Generator, AJP 26, 563-566 (1958).