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  • In the  mode of a transistor, when the collector voltage is changed by <img alt="\mathrm{0.5\ v

In the \mathrm{CB} mode of a transistor, when the collector voltage is changed by \mathrm{0.5\ volt}. The collector current changes by \mathrm{0.05\ mA}. The output resistance will be

Option: 1

\mathrm{10\ k \Omega}


Option: 2

\mathrm{20\ k \Omega}


Option: 3

\mathrm{5\ k \Omega}


Option: 4

2.5\ k\Omega


Answers (1)

best_answer

Here \mathrm{\Delta V_c=0.5 \mathrm{~V}, \Delta i_c=0.05 \mathrm{~mA}=0.05 \times 10^{-3} \mathrm{~A}}
Output resistance is given by
\mathrm{R_{\text {out }}=\frac{\Delta V_c}{\Delta i_c}=\frac{0.5}{0.05 \times 10^{-3}}=10^4 \Omega=10 \mathrm{k} \Omega}

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