In a triode value for a grid voltage V_g=-1.2V , the phase current I_p and plate voltage V_p are given I_p=(-5+0.1 V_0),I_p in mA and V_p in volt . When grid voltage is changed to - 3.2 V at constant plate voltage of 150 V , a plate current of 5 mA is observed , then Voltage amplification for 20 kOmega load in plate circuit is

In a triode value for a grid voltage V_g=-1.2V , the phase current I_p

1.	In a triode value for a grid voltage V_g=-1.2V , the phase current I_p and plate voltage V_p are given I_p=(-5+0.1 V_0),I_p in mA and V_p in volt . When grid voltage is changed to - 3.2 V at constant plate voltage of 150 V , a plate current of 5 mA is observed , then Voltage amplification for 20 kOmega load in plate circuit is
Answer» 5.5 10.5 16.67 20.2 Solution :VOLTAGE GAIN `= (muR_L)/(R_p+R_L)` `= (25xx20xx10^3)/((10xx10^3+20xx10^(3)))=50/3` i.e, `A_v=16.67`

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