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During the operation of a voltaic cell, the cell produces
1) electrical energy spontaneously
2) chemical energy spontaneously
3) electrical energy nonspontaneously
4) chemical energy nonspontaneously

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The answer is 1) electrical energy spontaneously

A voltaic cell is an electrochemical cell driven by a spontaneous chemical reaction and produces an electrical energy. The general form of reaction is
                     reagents → products + electrical energy.
This reaction is spontaneous.

However, the reverse reaction is nonspontaneous and it requires electrical energy.

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