Some voltaic cells are called dry because they do not have liquids in them.
Dry voltaic cells
They are called dry because their electrolytes are usually in paste forms instead of aqueous form in which the electrolytes of wet cells are usually are.
The pastes in dry cells are made moist enough for the electric current to be able to flow through them.
Dry cells are advantageous because they are less heavy and one does not have to worry about the electrolyte spilling, unlike wet cells.
More on dry voltaic cells can be found here: https://brainly.com/question/2674687
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