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  • The current in a triode at anode potential  and grid potential <img alt="-1.2

The current in a triode at anode potential 100 \mathrm{~V} and grid potential -1.2 \mathrm{~V} is 7.5 \mathrm{~mA}. If grid potential is changed to -2.2 \mathrm{~V}, the current becomes 5.5 \mathrm{~mA}. the value of trans conductance \left(g_m\right) will be

Option: 1

\mathrm{ 2 \text { mili mho }}


Option: 2

\mathrm{ 3 \text { mili mho }}


Option: 3

\mathrm{ 4 \text { mili mho }}


Option: 4

\mathrm{ 0.2 \text { mili mho }}


Answers (1)

best_answer

\mathrm{g_m=\left(\frac{\Delta I_p}{\Delta V_g}\right)_{V_p=\text { constant }}=\frac{(7.5-5.5)}{-1.2-(-2.2)}=2 \mathrm{mmho} }

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Nehul

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