5.16 An NMOS transistor having Vt = 0.5 V is operated in the triode region with vDS small. With vGS = 0.7 V, it is found to have a resistance rDS of 1 kΩ. What value of vGS is required to obtain rDS = 200 Ω? Find the corresponding resistance values obtained with a device having twice the value of W.
1.5 V; 500 Ω to 100 Ω