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Question
In which of the following cells polarisation is the major defect?
In which of the following cells polarisation is the major defect?
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Solution
The correct option is B Voltaic cell
The chemical action that occurs in the cell while the current is flowing causes hydrogen bubbles to form on the surface of the anode. This action is called POLARIZATION. Some hydrogen bubbles rise to the surface of the electrolyte and escape into the air, some remain on the surface of the anode. If enough bubbles remain around the anode, the bubbles form a barrier that increases internal resistance. When the internal resistance of the cell increases, the output current is decreased and the voltage of the cell also decreases.
Voltaic cell has a lot of polarization due to ongoing reactions.Daniell cell is an improvement on the voltaic cell using two electrolytes and solves the problem of polarisation.
The chemical action that occurs in the cell while the current is flowing causes hydrogen bubbles to form on the surface of the anode. This action is called POLARIZATION. Some hydrogen bubbles rise to the surface of the electrolyte and escape into the air, some remain on the surface of the anode. If enough bubbles remain around the anode, the bubbles form a barrier that increases internal resistance. When the internal resistance of the cell increases, the output current is decreased and the voltage of the cell also decreases.
Voltaic cell has a lot of polarization due to ongoing reactions.Daniell cell is an improvement on the voltaic cell using two electrolytes and solves the problem of polarisation.
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