Engineering and Applied Sciences Applied Physics 216 Lecture 4: Lecture 4

• School: Harvard University
• Department: Engineering and Applied Sciences
• Course: Engineering and Applied Sciences Applied Physics 216
• Professor: Jene Golovchenko

Document Summary

Ap 216 lecture 4 electrostatics, electrostatic energy, scalar potentials, green function. 0 t assuming boundary condition at infinity we can use helmholtz theorem. The first term on right defines the electrostatic scalar potential x. 4 all space x x x dv (4) and the second states coulomb"s law for a continuous charge distribution. In statics the scalar potential can only be gauged by a constant. 2 as the fundamental equation that satisfies. If is localized 0 as |x | is the natural boundary condition. Point charge q" at x " defined by x x x q gives x resulting in a force on charge q at x of. If a charge q is moved infinitely slowly (so no kinetic energy is involved) along a path. Cab from x external work that must be done to move the charge is. B , in a static potential caused by external stationary charges the.