Electronic Devices Lecture-21: Problems on Fermi level Concept

In this lecture, i discussed few problems on Fermi level concept.

For Video Lecture follow the below link:  
https://youtu.be/sXNklMWHpfU

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/8fuefjok94w55mx/EDC-Lec-21.pdf