Q. If the amplification factor of a triode $(\mu)$ is 22 and its plate resistance is $6600\ ohm$, then the mutual conductance of this valve is mho is
A) $\frac{1}{300}$
B) $25 \times 10^{- 2}$
C) $2.5 \times 10^{- 2}$
D) $0.25 \times 10^{- 2}$
Explanation
(a) $\mu = r_{p} \times g_{m} \Rightarrow g_{m} = \frac{\mu}{r_{p}} = \frac{22}{6600} = \frac{1}{300}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.