Chemistry - Galvanic cells
In a galvanic cell, the electron transfer occurring during a redox
reaction is converted into a useful flow of electric current by separating
the site of oxidation (the electrode called the anode) from the site of
reduction (the electrode called the cathode). The ease with which the
electrons move from the anode (where the reductant is oxidised) to the
cathode (where the oxidant is reduced) is reflected in the 'potential
difference' between the two sites.
This potential difference is effectively a measure of the 'driving force'
or 'electrical pressure' pushing electrons through the electric circuit.
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