How Does Current Flow Through an N-Channel MOSFET?

[Dembie]

Homework Statement

Homework Equations

How current flows through n channel mosfet since bassicaly by applying positive voltage to the drain and negative to the substrate we actualy make the depletion layer grow widher. I mean when there is positive voltage at the gate it attracts electrons and thus creating a layer underneath the gate and between S and D that is depleted of mobile charges. And the drain is also reverse biased.

The Attempt at a Solution

Is there some kind of drift current from S to D like in the bjts?

 

[CWatters]

Have a read of..
https://en.wikipedia.org/wiki/MOSFET#MOSFET_structure_and_channel_formation

 

[Dembie]

Have a read of..
https://en.wikipedia.org/wiki/MOSFET#MOSFET_structure_and_channel_formation

Thank you, sir