PHYSICS 202/202P:AN INTRODUCTION TO

ELECTRICITY & MAGNETISM

SPRING 1999http://www.courses.psu.edu/phys/phys202_nxs16/sp99

Instructional Team

n Course/Lab administrator:Professor Nitin Samarth(nsamarth@psu.edu)

n Lectures: Professor Moses Chan(chan@phys.psu.edu)

n Recitation instructorsn Lab instructors

COURSE REQUIREMENTS

n Register for both Phys 202 & 202Pn Text: Halliday, Resnick, Walker 5th

editionn Desktop experimental kitn Lab worksheets (available in

installments)

Course Structure

n Lecture: reading assignmentsn Recitation: homework assignments +

quizzesn Lab: prelab worksheet + lab report +

quizzesn 2 midterm exams + 1 comprehensive

final

Grading Structure

nRecitation: 20% (Hw+quizzes)nLab: 15% (Lab reports +

quizzes)n2 Midterm Exams: 20% eachnFinal: 25 %

Grading Structure

nAbove 85% : An70% - 84%: Bn56% - 69%: Cn50% - 55%: DnBelow 50%: F

SECRET TO SUCCESS

n REVIEW CALCULUS + PHYS 201n READ THE TEXT !!n ATTEND ALL LECTURES,

RECITATIONS, LABSn SOLVE ASSIGNED PROBLEMSn ASK QUESTIONS !!n LEARN TO WORK & STUDY IN

GROUPS

NEW LABS

n Hands-on experimentsn Computer simulationsn Data analysis and numerical modeling

using Microsoft Exceln Analytical problem solving

COURSE SCHEDULE

n Lectures/recitations run onTuesday-Monday “week”

n Labs run on regular Monday-Friday weekly schedule

n Lab#1: Jan 18 - Jan 22

The 4 Fundamental Forces

15 BILLION YEARS AGO

What You’ll Learn in Phys 202

n Four Fundamental Laws aboutelectromagnetism:

MAXWELL’s EQUATIONSn Basis for many phenomena in Nature:

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

n Electric Charge è Electric Field èForce on other electric charges

n MOVING electric charge (current) èMAGNETIC field è Force on otherMOVING electric charges

n Time-varying current è Electric Fieldn Electric and magnetic fields store

energy

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

Mobile “Sea” of Electrons

Static Positive Ions

Insulators

Static Positive Ions

Electron Cloud:“immobile” but can be distorted

Gold Leaf Electroscope

GLASS JAR

METAL

Hingedgold leaf

Charged rod

Gold Leaf Electroscope

Gold Leaf Electroscope