1. 16.360 Lecture 19 Maxwell equations E: electric field intensity
D: electric flux intensity
H: magnetic field intensity
B: magnetic flux intensity
: electrical permittivity; :magnetic permativity
v: electric charge density per unit volume; J: current density per unit area.
Electrostatics
Magnetostatics

2. 16.360 Lecture 19 Electrostatics Volume charge density
Surface charge density
Line charge density

3. Lecture 19
Current density J

4. Lecture 19
Coulomb’s law

5. Lecture 19
Electric field due to a charge distribution

6. Lecture 19
Gauss’s law
Gauss’s law

7. Lecture 19
Electrical scalar potential

8. 16.360 Lecture 19 Electrical potential due to point charge
Electrical potential due to continuous distributions

9. 16.360 Lecture 19 Electric field as a function of Electrical potential
Poison’s equation
Poison’s equation
Laplace’s equation

10. 16.360 Lecture 19 Electrical properties of material conductor
dielectric
semiconductor

11. 16.360 Lecture 20 Conductors Electron drift velocity
Hole drift velocity
Conducting current
Point form of Ohm’s law

12. Lecture 20
Resistance
General form

13. Lecture 20
Joule’s law
General form

14. Lecture 20
Dielectrics
Electrical field induced polarization

15. 16.360 Lecture 20 Dielectrics P: electric polarization field
For homogeneous material:
Electric susceptibility
Relative permittivity:
Dielectric breakdown

16. 16.360 Lecture 20 Electric boundary condition
the tangential component is continuous
across the boundary of two media.

17. 16.360 Lecture 20 Electric boundary condition
the normal component of D changes, the
amount of change is equal to the surface
Charge density.

18. Lecture 20
Dielectric-Conductor boundary

19. Lecture 20
Conductor-Conductor boundary

20. Lecture 20
Capacitance

21. 16.360 Lecture 20 Electrostatic Potential Energy Image Method
Any given charge above an infinite, perfect conducting plane is electrically
equivalent to the combination of the give charge and it’s image with conducting
plane removed.