How Does Current Flow Through an N-Channel MOSFET?

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Current flows through an N-channel MOSFET when a positive voltage is applied to the gate, attracting electrons and forming a conductive channel between the source and drain. This process creates a depletion region as the gate voltage increases, allowing for electron movement. The drain is reverse biased, which influences the current flow dynamics. The discussion raises questions about drift current from source to drain, similar to bipolar junction transistors (BJTs). Understanding these principles is crucial for analyzing MOSFET operation effectively.
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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?
 
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