Question

If a triode value amplification factor is 20 and plate resistance is \( 10 \, \text{k}\Omega \), then its mutual conductance is

• A. \( 2 \, \text{milli mho} \)
• B. \( 20 \, \text{milli mho} \)
• C. \( 0.5 \, \text{milli mho} \)
• D. \( 10 \, \text{milli mho} \)

Hint:

The mutual conductance of a triode is inversely proportional to the plate resistance and related to the amplification factor.

Answer 1

The Correct Option is A

The mutual conductance \( g_m \) of the triode is related to the amplification factor and the plate resistance by the formula \( \mu = \frac{V_{\text{plate}}}{I_{\text{plate}}} \). Using the given values, we calculate the mutual conductance.

Step 2: Conclusion.
The mutual conductance is \( 2 \, \text{milli mho} \), corresponding to option (a).