Question
Correct relation for triode is
✓
Answer
Electrostatic shielding theory shows that the electrostatic field in the vicinity of the cathode of a triode is proportional to $\left( E _{ c }+ E _{ b }\right) / \mu$, where $E _{ c }$ and $E _{ b }$ are the grid and anode voltages respectively.
Correct relation for triode is $\mu= g _{ m } \times r _{ p }$
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