JEE Main 2022 · 26 Jul · Shift 2 · Physics Q56

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PhysicsInteger+4 / -1Question 56 of 90

The typical transfer characteristics of a transistor in CE configuration is shown in figure. A load resistor of 2 kΩ is connected in the collector branch of the circuit used. The input resistance of the transistor is 0.50 kΩ. The voltage gain of the transistor is ______.

IC (mA) against IB (μA): a straight line through the origin passing (100, 5), (200, 10), (300, 15) and (400, 20).

Your answer

Answer and worked solution

Official answer: 200

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

Voltage gain $\beta\frac{R_L}{R_i}=50\times\frac2{0.5}=200$ .

Answer: 200

Topics:Transistors

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JEE Main 2022 · 26 Jul · Shift 2, Physics question 56