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  3. BCECE Engineering

BCECE Engineering BCECE Engineering Solved Paper-2005

  • question_answer
    The resistance of a discharge tube is:

    A)  zero                                     

    B)         ohmic

    C)         non-ohmic                        

    D)         infinity

    Correct Answer: C

    Solution :

    In discharge tube, the current is due to flow of positions ions and electrons. Moreover secondary emission of electrons is also possible. So, \[V-I\]curve is non-linear, hence its resistance is non-ohmic.


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