JEE Main & Advanced Physics Semiconducting Devices Question Bank Valve Electronics (Diode and Triode)

  • question_answer
    If the amplification factor of a triode (m) is 22 and its plate resistance is 6600 ohm, then the mutual conductance of this valve is mho is                                                            [MP PMT 1989]

    A)            \[\frac{1}{300}\]                 

    B)            \[25\times {{10}^{-2}}\]

    C)            \[2.5\times {{10}^{-2}}\] 

    D)            \[0.25\times {{10}^{-2}}\]

    Correct Answer: A

    Solution :

               \[\mu ={{r}_{p}}\times {{g}_{m}}\Rightarrow {{g}_{m}}=\frac{\mu }{{{r}_{p}}}=\frac{22}{6600}=\frac{1}{300}.\]


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