In an experiment of CE configuration of n-p-n transistor, the transfer characteristics are observed as given in figure. If the input resistance is 200 Ω and output resistance is 60 Ω, the voltage gain in this experiment will be ____________. Numerical answer type. Work it out, then open the answer.

Answer: 15. From the graph: β = (Δ IC)/(Δ IB) = (5 mA)/(100) = 50 Voltage gain: Av = β (Ro)/(Ri) = 50 × 60/200 = 15 So the voltage gain is 15.

In an experiment of CE configuration of n-p-n transistor, the… | JEE Main 2022 (25 Jun, Shift 2)

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Junction Transistor

In an experiment of CE configuration of n-p-n transistor, the transfer characteristics are observed as given in figure.

If the input resistance is 200 $\Omega$ and output resistance is 60 $\Omega$ , the voltage gain in this experiment will be ____________.

Numerical answer type. Work it out, then open the answer.

Show answer and solution

Answer: 15

From the graph: $\beta = \dfrac{\Delta I_C}{\Delta I_B} = \dfrac{5\ \text{mA}}{100\ \mu\text{A}} = 50$
Voltage gain: $A_v = \beta \dfrac{R_o}{R_i} = 50 \times \dfrac{60}{200} = 15$
So the voltage gain is 15.