Q109 / 120 · VITEEE 2012 · Physics

If in a triode value amplification factor is 20 and plate resistance is $10 \mathrm{k} \Omega$, then its mutual conductance is

  • Correct answer
    A
    2 milli mho
  • B
    20 milli mho
  • C
    $(1 / 2)$ millimho
  • D
    200 millimho

Solution

Mutual conductance $\mathrm{g}_{\mathrm{m}}=\frac{\mu}{\mathrm{R}_{\mathrm{P}}}$ $$ =\frac{20}{10 \times 10^{3}}=2 \times 10^{-3}=2 \text { milli mho } $$

Hence, the correct answer is option: 'A'.

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