1. 16.360 Lecture 19 Exam II Average: 77.8

2. 16.360 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

3. 16.360 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

4. 16.360 Lecture 19 Electrostatics Volume charge density Surface charge density Line charge density

5. 16.360 Lecture 19 Current density J

6. 16.360 Lecture 19 Coulomb’s law

7. 16.360 Lecture 19 Electric field due to a charge distribution

8. 16.360 Lecture 19 Gauss’s law

9. 16.360 Lecture 19 Electrical scalar potential

10. 16.360 Lecture 19 Electrical potential due to point charge Electrical potential due to continuous distributions

11. 16.360 Lecture 19 Electric field as a function of Electrical potential Poison’s equation Laplace’s equation

12. 16.360 Lecture 19 Electrical properties of material conductor dielectric semiconductor