A depletion MOSFET is given to have large VA, VP = 2.8 V, IDSS = 4.3 mA, vDS = 4.5 V, and vGS = 1.2 V.
(a) Is the MOSFET operating in the active region?
(b) Find iD.
(c) Comment on whether the device is operating in the depletion mode or in the enhancement mode.