A voltaic cell does not operate unless the two compartments are connected through an external circuit because there is no flow of electrons.
A voltaic cell is an electrochemical device that generates electricity through a chemical process. The key components of a voltaic cell are: An electrode where oxidation takes place is the anode. Reduction takes place on the cathode, an electrode.
These electrons work to reduce the compound on the cathode side of the electrochemical cell when one compound in the anode is oxidised. The process finishes and the cell ceases functioning when the material at the anode has no more electrons to lose.
Therefore, a voltaic cell does not operate unless the two compartments are connected through an external circuit because there is no flow of electrons.
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