a. A Si bar 0.1 μm long and 100 μm in cross- sectional area is doped with 107 cm³ phosphorus. Find the current at 300K with 10V applied. b. Repeat for Si bar 1 μm c. How long does it take an average electron to drift 1 μm in pure Si at an electric field of 100V/cm d. Repeat part (c) for 105 V/cm