Triode — UPSC Physics Optional CSE 1986 Paper II

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A triode has a transconductance ( $g_m$ ) of $1,600\text{ micromhos}$ . The following table gives two sets of the plate voltage ( $E_b$ ), the grid voltage ( $E_c$ ) and the plate current ( $I_b$ ).

$E_b$	$E_c$	$I_b$
$250\text{ V}$	$-22\text{ V}$	$12.6\text{ mA}$
$180$	$-16.5$	$12.0$

Define the terms amplification factor and plate resistance and calculate them for the above case.

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Triode — UPSC Physics Optional CSE 1986 Paper II

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