Question
Question: The grid voltage of any triode valve is changed from –1 volt to – 3 volt and the mutual conductance ...
The grid voltage of any triode valve is changed from –1 volt to – 3 volt and the mutual conductance is 3×10−4mho. The change in plate circuit current will be
A
0.8 mA
B
0.6 mA
C
0.4 mA
D
1 mA
Answer
0.6 mA
Explanation
Solution
By using gm=ΔvgΔip⇒ 3×10−4=−1−(−3)Δip
⇒ Δip=6×10−4A=0.6mA