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# lec6 - wrote these symbols?” Ludwig Boltzmann citing...

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Lecture Notes for C-term 2009 Lecture 6 Prof. R. Ludwig Department of Electrical and Computer Engineering Worcester Polytechnic Institute Worcester, MA ECE 2112 Electromagnetic Theory Copyright, 2000 © R. Ludwig

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ECE2112_6 2 Lecture 6 Objectives What is the key contribution of Maxwell? What are Maxwell’s equations in integral and differential forms? What are phasors?
ECE2112_6 3 ECE 2112 - Lecture 6 Maxwell’s Equations Can be cast in integral and differential forms   dV d V S D  S B l E d dt d d  0 dV B   S D S J l H d dt d d d Use integral theorems to convert above equations V D t B E t D J H 0 B “Was is God who

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Unformatted text preview: wrote these symbols?” Ludwig Boltzmann citing Johann Wolfgang von Goethe ECE2112_6 4 ECE 2112 Lecture 6 • Charge density dV dQ V q V V lim Total charge enclosed dV z y x Q V ) , , ( dl dQ l Q l l lim dS dQ S Q S S lim dS Q S dl z y x Q l ) , , ( ECE2112_6 5 ECE 2112- Lecture 6 • Phasor (circuit) Fictitious quantity (used as a linear circuit descriptor) )} exp( Re{ ) ( t j V t v )} exp( ) ( Re{ ) , ( t j t r E r E • Phasor (EM)...
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