EE2 Physics for Electrical Engineers
Electrical Engineering Department, UCLA
Instructor: Jason Woo/Yanjie Wang
Office: 64-119 Engineering IV Bldg.
Email: firstname.lastname@example.org - Response cannot be guaranteed
For important matters, pl
Due April 14, 2011
Problem#1 (30 points)
a) Calculate the de Broglie wavelength of a particle with mass equal to 1.5 g and
moving with a velocity of 10 km per hour.
b) For electrons which are excited across a voltage of 50-400 Volts, calculate
Due date 4/28/11
1. (30 points)
Silicon crystal has face centered cubic (fcc) structure, with an atom at each corner of the
unit cell and an atom situated in the middle of each face of the unit cell. The unit cell and
Due April 21, 2011
1. 25 points
a. Show that the Fermi function is symmetric about EF, i.e.,
f(EF+E)=1 - f(EF-E)
b. Show that when (E - EF) 2kT, f(E) exp
Actually, calculate f(E) for (E - EF ) equal to 2kT, 3kT and 4kT by using the
1. The band gap of InSb is 0.18eV. It has a relative dielectric constant
s =17, electron effective
mass is mn =0.015 m0 .
Estimate ionization energy of donor atoms in InSb by using Bohrs model for the
Hydrogen atom, and applying it to InS
a) Calculate the room temperature conductivity of intrinsic Si. Here we assume at room
temperature, intrinsic Si has electron and hole mobility of 1450cm2/Vs and 500cm2/Vs.
b) Now we doped this Si with As atom with a doping concentration of 5X1
1. Derive and sketch electric field ( x ) and potential V(x) distribution with the following charge
distribution(x from 0~d; at x=0, (0) =0,V(0)=0):
( x) =c.
2) ( x ) = q x .
2. The diode we talked in class are long base diode, which means the neu
EE2 Physics for Electrical Engineers - Fall 2015 Sokolich
Homework #3 More Equilibrium Statistics, conductivity, resistivity, mobility and drift
[Due: 24 October, 2016]
1. Last week you were asked to find the intrinsic carrier concentration of electr
EE2 Physics for Electrical Engineers - Fall 2016 Sokolich
Homework #2 Atoms, Electrons and Equilibrium Statistics
1. (Streetman 7th 2.1c) The work function of Platinum (Pt) is 4.09 eV. What retarding
potential will be required to reduce the pho
ElectricalEngineeringDepartment TheHenry Samueli School of Engineering andAppliedScience UniversityofCalifornia,LosAngeles
Dee-Son Pan email@example.com Phone (310)-825-1123
EE2 Midterm (Open Book and Notes)
I. Silicon has a diamond structure wi
Home work #1 solutions I. An atomic orbital is a mathematical function that describes the wave-like stationary motion for an electron in an atom. The orbital names (s, p, d, f, g, h,.) are derived from the characteristics of their spectroscopic lines: sha
(a) The mathematical description of electromagnetic wave composed of amplitude,
wavelength and frequency in the form: (b)
A e k x t
h , where p is the momentum and h is the p
Duality between particle and wave, =
h x t p
( , t
Foreign Policy under Occupation:
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The Ministry of Foreign Affairs most difcult task has been to
develop an independent Iraqi foreign policy at a time when our
country is under legal occupation.
Iraq: Post-Saddam Governance and Security
Specialist in Middle Eastern Affairs
October 28, 2009
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CRS Report for Congress
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