A) \[\,\text{=}\,\text{r}{{ }_{\text{P}}}\text{ }\!\!\times\!\!\text{ }\,{{\text{g}}_{\text{m}}}\]
B) \[\,\text{r}{{ }_{\text{P}}}=\,{{\text{g}}_{\text{m}}}\times \mu \]
C) \[\,\,{{\text{g}}_{\text{m}}}=\mu \times {{r}_{p}}\]
D) \[\,\,{{\text{g}}_{\text{m}}}=\frac{\mu }{{{r}_{p}}}\]
Correct Answer: A
Solution :
For triode valve \[\mu ={{r}_{p}}\times {{g}_{m}}\] \[\mu \] = amplification factor, \[{{r}_{p}}\] plate resistance and \[{{g}_{m}}\] mutual conductance.
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