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Step 1 of 1 5.017E The condition for a depletion-type NMOS transistor to operate in saturation region is, Therefore, the minimum value of drain-source voltage, is, Substitute 1 V for the gate-source voltage, , and for the threshold voltage, =3V Therefore, the minimum value of drain to source voltage, is, 3V The equation for drain current at this drain to source voltage is, Substitute 2 for the process trans-conductance parameter, , and 3 V for = = 9 mA Therefore, the drain current, is -