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

  • question_answer
    The slope of plate characteristic of a vacuum tube diode for certain operating point on the curve is \[{{10}^{-3}}\frac{mA}{V}\]. The plate resistance of the diode and its nature respectively [MP PMT 1990]

    A)            100 kilo-ohms static          

    B)            1000 kilo-ohms static

    C)            1000 kilo-ohms dynamic  

    D)            100 kilo-ohms dynamic

    Correct Answer: B

    Solution :

                       Plate resistance \[=\frac{1}{\text{slope}}=\frac{1}{{{10}^{-3}}\times {{10}^{-3}}}={{10}^{6}}\Omega \]                    = 1000 kW (static).


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