Using the characteristics of Fig. 6.11: a. Determine the difference in drain current (for VDs > Vp) between VGS = 0 V and VGS = -1 V. b. Repeat part (a) between VGS = -1 and -2 V. c. Repeat part (a) between VGS = -2 and -3 V. d. Repeat part (a) between VGS = -3 and -4 V. e. Is there a marked change in the difference in current levels as VGs becomes increasingly negative?