For a CE - transistor amplifier , the audio signal voltage across the collector resistance of 2kOmega is 2 V. Suppose the current amplification factor of the transistor is 100, find the input signal voltage and base current , if the base resistance is 1 kOmega.

For a CE - transistor amplifier , the audio signal voltage across the

1.	For a CE - transistor amplifier , the audio signal voltage across the collector resistance of 2kOmega is 2 V. Suppose the current amplification factor of the transistor is 100, find the input signal voltage and base current , if the base resistance is 1 kOmega.
Answer» `5 muA` `10 muA` `15 muA` `20 muA` Solution :Here , `R_0 = 2kOmega = 2000 Omega , a = 100 , R_i= 1kOmega = 1000 Omega , V_0 = 2V` `:.` voltage amplification factor `A_v=V_o/V_i=alpha(R_o)/(R_i)` `:. V_t=(V_oR_i)/(alphaR_o)=(2xx1000)/(100xx2000)=0.01V` Also , `I_b=V_i/R_i=(0.01)/(1000)=1xx10^(-5)xx10^(6)muA` `= 10 muA`.

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For a CE - transistor amplifier , the audio signal voltage across the collector resistance of 2kOmega is 2 V. Suppose the current amplification factor of the transistor is 100, find the input signal voltage and base current , if the base resistance is 1 kOmega.

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