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JEE Main & Advanced Physics Semiconducting Devices Question Bank Graphical Questions

  • question_answer
    The variation of anode current in a triode corresponding to a change in grid potential at three different values of the plate potential is shown in the diagram. The mutual conductance of the triode is [CPMT 1986, 88]

    A)            2.5 m mho                               

    B)            5.0 m mho

    C)            7.5 m mho                             

    D)            10.0 m mho

    Correct Answer: A

    Solution :

               \[{{g}_{m}}=\frac{\Delta {{i}_{p}}}{\Delta {{V}_{g}}}=\frac{(20-15)\times {{10}^{-3}}}{(4-2)}=2.5\,milli\,mho\]


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