16.360 Lecture 19 Exam II Average: 77.8. 16.360 Lecture 19 Today Brief review of Electrostatics (I) 1.Maxwell equations 2.Charge and current distributions.

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Presentation transcript:

Lecture 19 Exam II Average: 77.8

Lecture 19 Today Brief review of Electrostatics (I) 1.Maxwell equations 2.Charge and current distributions 3.Coulomb’s law 4.Gauss’s law 5.Electrical scalar potential 6.Electrical properties of Materials

Lecture 19 Maxwell equations  : electrical permittivity;  :magnetic permativity  v : electric charge density per unit volume; J: current density per unit area. ElectrostaticsMagnetostatics E: electric field intensity D: electric flux intensity H: magnetic field intensity B: magnetic flux intensity

Lecture 19 Electrostatics Volume charge density Surface charge density Line charge density

Lecture 19 Current density J

Lecture 19 Coulomb’s law

Lecture 19 Electric field due to a charge distribution

Lecture 19 Gauss’s law

Lecture 19 Electrical scalar potential

Lecture 19 Electrical potential due to point charge Electrical potential due to continuous distributions

Lecture 19 Electric field as a function of Electrical potential Poison’s equation Laplace’s equation

Lecture 19 Electrical properties of material conductor dielectric semiconductor