For a Common-Emitter amplifier, the audio signal voltage across the collector resistance of 2 kΩ is 2 V. Suppose the current amplification factor of the transistor is 100. The base resistance is 1 kΩ. The input signal voltage will be:
Answer & explanation
Correct answer: option 2
$ V_{in} = \frac{V_{out}R_{CE}}{\beta R_{BE}}= 0.04V$