Calculations and analysis.
Drain Current (Id)= IR1 = Gate Voltage (V. GV)/R1.
Here R1 = 1K
I replaced the R1 with a variable resistor (VR1) to enable me to select the required current.
If I = 814uA V = 2.31v
(almost at off stage)
Then R at the drain(output) = 2.31/0.000814 = 2.837K at a minimum voltage of 2.31v
When R1 = 30 Ohms, then the current is 4.35mA
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