The resistance is calculated using Vds/Id.
In the ohmic/linear region (Vds < Vgs-Vturnon). Here Vds=3V
- Vgs = 5V
- Id = 6.4mA
Rds= 468.75 Ohm
-Vgs = 10V
-Id=16.8mA
Rds= 178.57 Ohm
In the saturated region (Vds >=Vgs-Vturnon). Here Vds = 10V
- Vgs = 5V
- Id = 9.83mA
Rds = 1017.29 Ohm
- Vgs = 10V
- Id = 43.1mA
Rds = 232 Ohm