Engineering Physics II
Unit-1 Conducting materials
2 Marks
1. Define mobility of electrons.
2.Define electrical conductivity.
3. What are the merits of classical free electron theory?
4. Define mean free path.
5. Define relaxation time of an electron,
6. Define drift velocity of electron.
7. What are the drawbacks of classical free electron theory?
8. State Wiedemann-Franz law.
9.What is a Lorentz number?
10. Write down Fermi-Dirac distribution function.
11. Define Fermi level and fermi energy with its importance.
12. How does Fermi function varies with temperature.
13.Define density of states. What is its use?