EE 307 Chapter 4 - Electrostatic Fields

EE 307 Chapter 4 - Electrostatic Fields - ECE 307:...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ECE 307: Electricity and Magnetism Spring 2010 Instructor: J.D. Williams, Assistant Professor Electrical and Computer Engineering University of Alabama in Huntsville 406 Optics Building, Huntsville, Al 35899 Phone: (256) 824-2898, email: [email protected] Course material posted on UAH Angel course management website Textbook: M.N.O. Sadiku, Elements of Electromagnetics 4 th ed . Oxford University Press, 2007. Optional Reading: H.M. Shey, Div Grad Curl and all that: an informal text on vector calculus, 4 th ed . Norton Press, 2005. All figures taken from primary textbook unless otherwise cited. 8/11/2010 2 Electrostatic Fields • Applications of electrostatics – Electric Power Transmission – X-ray machines – Lighting Protection – Solid State Electronics • Capacitors, Resistors, Field Effect Transistors – Touch pads – Keyboards – Cathode Ray Tubes – Electrocartiograms – Particle separation – Aspects of Electrochemistry – Electrostatic charge transfer in living organisms 8/11/2010 3 Chapter 4: Electrostatic Fields • Topics Covered – Coulomb’s Law and Field Intensity – Electric Fields due to Continuous Charge Distributions – Electric Flux Density – Gauss’s Law – Applications of Gauss’s Law – Electric Potential – Relationship Between E and V – An Electric Dipole and Flux Lines – Electric Density in Electrostatic Fields All figures taken from primary textbook unless otherwise cited. Homework: 4, 6, 9, 11, 15, 22,…, 25, 31, 32, 35, 43, 45, 48, 50 8/11/2010 4 Fundamental Problem of Electromagnetic Field Theory: • If one has some number of source charges (q1,q2,q3), then what force do they exert on another (test) charge? – In general the positions of the source are given as a function of time. – Also, as a general rule, both source and test charges are in motion. – For such cases, our goal is to calc. the trajectory of the test charge. – Solutions to these problems rely heavily on the principle of superposition : • The interaction between 2 charges is completely independent of the presence of other neighboring charges. Thus, we can determine the force acting on a test charge by summing each force applied to the test charge by neighboring charges individually. – Sound easy? It’s not!!! • In general, the force acting on a charge is not simply dependent on the position vector, r, but also on the velocities and accelerations of the two charges. As you might imagine, such solutions are very complex. • However we can reduce the problem to something more manageable by examining only cases in which charges are fixed in space over the time interval posed by the problem • Such problems are referred to as Electrostatic Problems and are the subject of the next three chapters of this book. 8/11/2010 5 Two Methods Useful Methods for Solving Electrostatic Problems • Coulomb’s Law – Can be used for any spatial configuration – Will be used to study point, line, surface and volume charges...
View Full Document

This note was uploaded on 12/14/2011 for the course EE 307 taught by Professor Williams during the Spring '10 term at University of Alabama - Huntsville.

Page1 / 51

EE 307 Chapter 4 - Electrostatic Fields - ECE 307:...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online