(a) The depletion nMOSFET of Fig. P3.22 is operated with v $ 0. Show that the device is always in the triode region. (b) Assuming Vt 5 21.0 V, k 5 100 A/V2 , and 5 0, sketch and label the i-v curve...

(a) The depletion nMOSFET of Fig. P3.22 is operated with v $ 0. Show that the device is always in the triode region. (b) Assuming Vt 5 21.0 V, k 5 100 A/V2 , and 5 0, sketch and label the i-v curve for 0 # v # 5 V. (b) Find the device’s dynamic resistance r at v 5 0 V, 3 V, and 5 V. (Recall that r is the reciprocal of the slope of the i-v curve.)