For the common-source amplifier shown in Figure P4.27, the transistor parameters are \(V_{T P}=-1.2 \mathrm{~V}, K_{p}=2 \mathrm{~mA} / \mathrm{V}^{2}\), and \(\lambda=0.03 \mathrm{~V}^{-1}\). The drain resistor is \(R_{D}=4 \mathrm{k} \Omega\).

(a) Determine \(I_{Q}\) such that \(V_{S D Q}=5 \mathrm{~V}\).

(b) Find the small-signal voltage gain for \(R_{L}=\infty\).

(c) Repeat part (b) for \(R_{L}=\) \(8 \mathrm{k} \Omega\).

CC R=500 k +9 V CC2 g Cy R Rp Figure P4.27 -9 V