JCECE Engineering JCECE Engineering Solved Paper-2003

  • question_answer
    The internal resistance of a cell is the resistance of:

    A)  electrolyte used in cell

    B)  electrodes of the cell

    C)  material used in cell

    D)  vessel of the cell

    Correct Answer: A

    Solution :

    If a load (a device that consumes electrical power) is connected externally to the electrodes of a cell, electrons will flow under the influence of a difference in potential from cathode to anode. The current that a cell delivers depends upon the resistance of the entire circuit, including that of the cell itself. The internal resistance of the cell depends upon the size of the electrodes, the distance between them in the electrolyte and the resistance of the electrolyte. The larger the electrodes and the closer together they are in the electrolyte (without touching) the lower is the internal resistance of the cell and more current the cell is capable of supplying to the load.


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