Question

An n-channel MOSFET operating with VOV=0.5V exhibits a linear resistance = 1 kΩ when VDS is very small. What is the value of the device transconductance parameter kn?

(a) 2 mA/V^2

(b) 20 mA/V^2

(c) 0.2 A/V^2

(d) 2 A/V^2

This question was addressed to me in examination.

This intriguing question comes from MOSFETs Current-Voltage Characterisitcs in division MOS Field Effect Transistors (MOSFETs) of Electronic Devices & Circuits

Answer 1

Right answer is (a) 2 mA/V^2

For explanation: Use the standard mathematical expression to determine the value of kn.