PHYS 212L Lecture Notes - Lecture 1: Electric Field, Electrostatics, Test Particle
29 Jan 2019
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Document Summary
Electric forces intro to electrostatics electrostatics is the physics of electric forces tension. S friction are types of electric forces electric forces are everywhere without them. S pass through everything else electric forces electric forces can be both repulsive s attractive opposite charges attracts like charges repel. While this was benjamin franklin "s idea , coulomb made this quanta tire direction of force : away if 9 , s 92 are the same sign , toward if not. Newton "s laws still apply ! forces must be added as vectors. T2 refresher of vector addition : charge magnitude x - component y - component. X cos o y si no electric fields. E = fez = electric force on test charge charge go if you know the electric field , you electric field from point charge : ept - know the charge ( fe = q.
