I want to know the answer to the following question:
At what rate is the drain-source current increased when the gate-source current is increased?
All the background I'm provided with is that "The conductivity is varied by the electric field that is produced when a voltage is applied between the gate and source terminals; hence the current flowing between the drain and source is controlled by the voltage applied between the gate and source.". Is that enough to answer the question?
Answer: no