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

Explanation

Given `beta = 100 , R_(1) = 1 K Sigma`
`R_(theta) = 2k Sigma `
`V_(theta) 2 V , V_(1) = : ` and `I_(B) = ?`
Voltage gain `A_(V)` = currenct gain `xx ` Resistance gain
`= beta xx (R_(R))/( R_(1)) = 100 xx (2)/(1) = 200`
Here `I_(c ) = (V_(R))/( R_(theta) =(2)/(2) , = 1 mA`
`I_(B) = (I_(C) ) /(beta) = (1)/(100) = 0.01 mA = 10 muA`