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Transcript
PHYSICS 202/202P:
AN INTRODUCTION TO
ELECTRICITY & MAGNETISM
SPRING 1999
http://www.courses.psu.edu/phys/phys202_nxs16/sp99
Instructional Team
Course/Lab administrator:
Professor Nitin Samarth
([email protected])
n Lectures: Professor Moses Chan
([email protected])
n Recitation instructors
n Lab instructors
n
COURSE REQUIREMENTS
Register for both Phys 202 & 202P
n Text: Halliday, Resnick, Walker 5th
edition
n Desktop experimental kit
n Lab worksheets (available in
installments)
n
Course Structure
Lecture: reading assignments
n Recitation: homework assignments +
quizzes
n Lab: prelab worksheet + lab report +
quizzes
n 2 midterm exams + 1 comprehensive
final
n
Grading Structure
n Recitation:
20% (Hw+quizzes)
n Lab: 15% (Lab reports +
quizzes)
n 2 Midterm Exams: 20% each
n Final: 25 %
Grading Structure
n Above
85% :
n 70% - 84%:
n 56% - 69%:
n 50% - 55%:
n Below 50%:
A
B
C
D
F
SECRET TO SUCCESS
REVIEW CALCULUS + PHYS 201
n READ THE TEXT !!
n ATTEND ALL LECTURES,
RECITATIONS, LABS
n SOLVE ASSIGNED PROBLEMS
n ASK QUESTIONS !!
n LEARN TO WORK & STUDY IN
GROUPS
n
NEW LABS
Hands-on experiments
n Computer simulations
n Data analysis and numerical modeling
using Microsoft Excel
n Analytical problem solving
n
COURSE SCHEDULE
n Lectures/recitations
run on
Tuesday-Monday “week”
n Labs run on regular MondayFriday weekly schedule
n Lab#1: Jan 18 - Jan 22
The 4 Fundamental Forces
15 BILLION
YEARS AGO
What You’ll Learn in Phys 202
Four Fundamental Laws about
electromagnetism:
MAXWELL’s EQUATIONS
n Basis for many phenomena in Nature:
n
ä Electricity:
lightning, electric current,
electronics, your nervous system...
ä Radiation: light, x-rays, radio-waves,...
ä Magnetism: electric motors, MRI,...
ä Chemistry: chemical bonds, reactions,...
What You’ll Learn in Phys 202
Electric Charge è Electric Field è
Force on other electric charges
n MOVING electric charge (current) è
MAGNETIC field è Force on other
MOVING electric charges
n Time-varying current è Electric Field
n Electric and magnetic fields store
energy
n
Electric Charge
•Two types of charges: positive/negative
•Like charges Repel
•Opposite charges attract
• Atomic structure :
• negative electron cloud
• nucleus of positive protons, uncharged
neutrons
Conductors
Static Positive Ions
Mobile “Sea”
of Electrons
Insulators
Static Positive Ions
Electron Cloud:
“immobile” but can be distorted
Gold Leaf Electroscope
METAL
inged
old leaf
Charged rod
GLASS JAR
Gold Leaf Electroscope
Gold Leaf Electroscope