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

  • question_answer
    In an amplifier the load resistance \[{{R}_{L}}\] is equal to the plate resistance\[({{r}_{p}})\]. The voltage amplification is equal to [CPMT 1995]

    A)            \[\mu \]                                 

    B)            \[2\mu \]

    C)            \[\mu /2\]                             

    D)            \[\mu /4\]

    Correct Answer: C

    Solution :

               Voltage gain\[{{A}_{v}}=\frac{\mu }{1+\frac{{{r}_{p}}}{{{R}_{L}}}}\], for \[{{r}_{p}}={{R}_{L}}\] Þ \[{{A}_{v}}=\frac{\mu }{2}\]


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