Electronic Devices Question 184

Question: The grid voltage of any triode valve is changed from -1 volt to - 3 volt and the mutual conductance is $ 3\times {{10}^{-4}} $ mho. The change in plate circuit current will be

[MNR 1999]

Options:

A) 0.8 mA

B) 0.6 mA

C) 0.4 mA

D) 1 mA

Show Answer

Answer:

Correct Answer: B

Solution:

By using $ g _{m}=\frac{\Delta i _{p}}{\Delta v _{g}} $

Therefore $ 3\times {{10}^{-4}}=\frac{\Delta i _{p}}{-1-(-3)} $

Therefore $ \Delta i _{p}=6\times {{10}^{-4}}A=0.6mA $



NCERT Chapter Video Solution

Dual Pane