This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Prof. David R. Jackson ECE Dept. Spring 2011 Notes 2 ECE 2317 ECE 2317 Applied Electricity and Magnetism Applied Electricity and Magnetism Notes prepared by the EM Group University of Houston Definition: No time variation. In terms of frequency, f = 0 [Hz] The electromagnetic field splits into two independent parts: Electrostatics: ( q , E ) charges produce electric field Magnetostatics: ( I , B ) current produces magnetic field The static approximation is usually accurate for d << λ ( d is the dimension of the circuit or device). Statics Statics Example: f = 60 [Hz] λ = c / f Clearly, most circuits fall into the staticapproximation category at 60 [Hz]! c = 2.99792458 × 10 8 [ m/s ] f = 60 [ Hz ] This gives: λ = 4.9965 × 10 6 [m] = 4,996.5 [km] = 3,097.8 [miles] Statics (cont.) Statics (cont.) The following are special cases of electromagnetics at low frequency: circuit theory (e.g, ECE 2300) electronics power engineering magnetics (design of motors, generators, transformers, etc.)magnetics (design of motors, generators, transformers, etc....
View
Full Document
 Spring '08
 Staff
 Electrostatics, Electromagnet, Frequency, Magnetic Field, Electric charge, Fundamental physics concepts, charge density

Click to edit the document details