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

  • question_answer
    The amplification factor of a triode is 18 and its plate resistance is 8 ´ 103W. A load resistance of 104W is connected in the plate circuit. The voltage gain will be  [RPMT 2002]

    A)            30  

    B)            20

    C)            10  

    D)            1

    Correct Answer: C

    Solution :

               Voltage gain \[{{A}_{V}}=\frac{\mu }{1+\frac{{{r}_{p}}}{{{R}_{L}}}}=\frac{18}{1+\frac{8\times {{10}^{3}}}{{{10}^{4}}}}=10\].


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