JEE Main 2022 · 25 Jun · Shift 2 · Physics Q60

PhysicsInteger+4 / -1Question 60 of 90

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 ______.

Your answer

Answer and worked solution

Official answer: 15

Current gain from the graph. $\beta=\dfrac{\Delta I_C}{\Delta I_B}=\dfrac{5\text{ mA}}{100\ \mu\text A}=50$ .

Voltage gain. $A_V=\beta\dfrac{R_o}{R_i}=50\times\dfrac{60}{200}=15$ .

Answer: 15

JEE Main 2022 · 25 Jun · Shift 2, Physics question 60