The figure represents the variation of triode | vedclass

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(C) The plate resistance $r_p$ varies with plate current $i_p$ according to the relation $r_p \propto i_p^{-1/3}$. This means that as $i_p$ increases,

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$A$ and $C$

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(C) The plate resistance $r_p$ varies with plate current $i_p$ according to the relation $r_p \propto i_p^{-1/3}$. This means that as $i_p$ increases, $r_p$ decreases. Therefore, curve $C$ represents the variation of $r_p$.The amplification factor $\mu$ is essentially independent of the plate current $i_p$ for a triode valve, meaning it remains constant as $i_p$ changes. Therefore, curve $A$ represents the variation of $\mu$.Thus, the correct curves for $\mu$ and $r_p$ are $A$ and $C$ respectively.

The figure represents the variation of triode parameters ($\mu$, $r_p$, or $g_m$) with the plate current. The correct variations of $\mu$ and $r_p$ are given, respectively, by the curves:

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