In a common emitter transistor amplifier the audio sgnal voltage across the collector is 3 V. The resistance of collector is 3 k Ω. If current gain is 100 and the base resistance is 2 k Ω, the voltage and power gain of the amplifier is (a) 15 and 200 (b) 150 and 15000 (c) 20 and 2000 (d) 200 and 1000

Answer: (b). Voltage gain AV = β (RC)/(RB) = 100 × 3/2 = 150 Power gain = β × AV = 100 × 150 = 15000 So the answer is (b) 150 and 15000.

In a common emitter transistor amplifier the audio sgnal voltage… | NEET 2017

Q94NEET 2017Medium

Junction Transistor

In a common emitter transistor amplifier the audio sgnal voltage across the collector is 3 V. The resistance of collector is 3 k $\Omega$ . If current gain is 100 and the base resistance is 2 k $\Omega$ , the voltage and power gain of the amplifier is

Show answer and solution

Answer: (b)

Voltage gain $A_V = \beta \dfrac{R_C}{R_B} = 100 \times \dfrac{3}{2} = 150$
Power gain $= \beta \times A_V = 100 \times 150 = 15000$
So the answer is (b) 150 and 15000.

Report a mistake

Junction Transistor question from NEET 2017

More questions on Junction Transistor