Voltaic cells, also known as galvanic cells, are powered by an uncontrollable chemical reaction.
This implies that electrons will move voluntarily from the one side to the other of the electrochemical cell. Through an external circuit, this generates an electric current. An electrical potential difference between the two locations in the circuit causes the passage of charge. Batteries and fuel cells are built on top of these cells. The only other type of the electrochemical cell, however, is not them.
The cell potential, which quantifies the energy per unit charge made available by the oxidation-reduction reaction, is produced when the two distinct metals are joined together to each other.
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