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  • The transfer ratio of a transistor is . The input resistance of the transistor when used in the common emitter configuration

The transfer ratio of a transistor is 50. The input resistance of the transistor when used in the common emitter configuration is \mathrm{1\ K \Omega}. The peak value for an \mathrm{A.C} input voltage of \mathrm{0.01\ V} of collector current is

Option: 1

\mathrm{100\ \mu A}


Option: 2

\mathrm{0.01\ mA}


Option: 3

\mathrm{0.05\ mA}


Option: 4

\mathrm{500\ \mu A}


Answers (1)

best_answer

\begin{aligned} &\mathrm{ \beta=50, R_i=1000 \Omega, V_i=0.01 \mathrm{~V}} \\ &\mathrm{ \beta=\frac{i_c}{i_b} \text { and } i_b=\frac{V_l}{R_i}=\frac{0.01}{10^3}=10^{-5} \mathrm{~A}} \\ &\mathrm{ \text { Hence } i_c=50 \times 10^{-5} \mathrm{~A}=500 \mu \mathrm{A}} \end{aligned}

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avinash.dongre

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