(15 points) MOSFETs operation (The values may be changed in the real exam) One curve of an n-channel MOSFET is characterized by the following parameters: ID(Sat) = 2×10−4 A, VDS(sat) = 4 V, and VT = 0.8 V. (a) What is the gate voltage? (b) If VGS = 2 V and VDS = 2 V, determine ID. (c) If VGS = 3 V and VDS = 1 V, determine ID. For saturation region, ID = WμnCox2L(VGS − VT)2