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
Amplification factor `mu` is

Options

A. 25
B. 5.5
C. 10.5
D. 16.67

Answer

D

Explanation

Amplification factor ,
`mu= R xx G `
`= 10 ^4 xx2.5xx10^(-3) = 25`