# For a common emitter amplifier , the audio signal voltage across the collector resistance of $2\;HK \Omega$ is $2V$. Suppose the current amplification factor of a transistor is 100, find the input signal voltage and base current , if the base resistance is $1\;k \;\Omega$
$\begin{array}{1 1} 5\;\mu A \\ 10\;\mu A \\ 15\;\mu A \\ 20\;\mu A \end{array}$