Electronic Devices Question 235

Question: In the following common emitter configuration an NPN transistor with current gain b = 100 is used. The output voltage of the amplifier will be

[AIIMS 2003]

Options:

A) 10 mV

B) 0.1 V

C) 1.0 V

D) 10 V

Show Answer

Answer:

Correct Answer: C

Solution:

Voltage gain $ =\frac{\text{Output voltage}}{\text{Input voltage}} $

Therefore Vout = Vin x Voltage gain

Therefore Vout = Vin x Current gain x Resistance gain = Vin x b x $ \frac{R _{L}}{R _{BE}} $ = $ {{10}^{-3}}\times 100\times \frac{10}{1}=1V.$



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