Physics 1404-001 (General Physics II) Lectures
Topics in the book by Nicholas Giordano 2nd Edition
Chapter 17Electric Forces and Fields
Note: These Lectures (Power Point) are are UNDERGOING CONSTRUCTION!!
A GOAL is to post a lecture before we discuss a topic in class, but I can't promise!
No reproduction &/or use of them other than by students in this course is allowed!!
Phys 2401 Lectures

Chapter Summary: A File Provided by the Publisher!
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Part I: Section 17.1: Evidence for Electric Forces: Observational Data.
Properties of Electric Charges:
1. There are 2 Kinds of Charge: Positive & Negative
2. Like Charges Repel & Unlike Charges Attract
3.  Charge is Conserved.  Can be transferred, but not created or destroyed.
4. Charge is Quantized. Always comes in integer multiples of electron charge e.
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Part II: Section 17.2: Electric Forces & Coulomb's Law
Electric Forces are Vector Forces!
1. Understanding vectors (Physics I) is vital to understand electrostatics!
2. Electric Force between charges q1 & q2 distance r apart varies as (1/r2).
3. Total force on a charge  = VECTOR SUM of  forces due to all other charges.
4.  In calculations, try to use "common  sense"  to see if answer is correct
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Part III: Sections 17.3 & 17.4: The Electric Field.
Electric Fields are Vectors!
Electric Fields near Conductors & Insulators
1. Electric Field is defined as the Coulomb Force divided by a test charge.
2. Electric Field Lines.
3. Total Electric Field at a Point = VECTOR SUM of  Fields due to all charges.
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Part IV: Supplement:  Fields of Continuous Charge Distributions.
Overview Only!
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Part V: Section 17.5: Electric Flux & Gauss's Law.
1. Electric Flux is Defined as Electric Field Divided by Area
2. Gauss's Law: Electric Flux Through Closed Area = (Charge Enclosed)/(Epsilon0)
3. Gauss's Law & Coulomb's Law give the same Physics.
4.  Gauss's Law is Useful & Practical Only for High Symmetry.