Modern Physics Ques 286
- The plate resistance of a triode is $3 \times 10^{3} $ $\Omega$ and its mutual conductance is $1.5 \times 10^{-3} $ $A / V$. The amplification factor of the triode is
(1981, 2M)
(a) $5 \times 10^{-5}$
(b) $4.5$
(c) $45$
(d) $2 \times 10^{5}$
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Answer:
Correct Answer: 286.(b)
Solution:
Formula:
- Given, $r _p=3 \times 10^{3} \Omega, g _m=1.5 \times 10^{-3} $ $A / V$
$\therefore$ Amplification factor, $\mu=g _m \times r _p=4.5$
BETA
