Electrostatics

As most people already know, atoms are either charged positive, negative( ions) or neutral. Likewise ,objects can be either charged positive, negative or neutral. If two objects with the same charges are put together, they will repel, if they have different charges they will attract to each other.
 * __Electrostatics__** are the electric forces taking place when dealing with charged objects.



__**Insulators & Conductors**__ In addition to being charged ,objects can also conduct their charge. Insulators are objects that do not conduct electricity whereas a conductor can. An object is either an insulator or a conductor depends on the material, metals are generally very good conductors and most other materials are insulators with exceptions of course, there are several materials that are considered both insulator and conductor called semiconductors.

__**Q=ne**__ is the formula for finding the charge of electrons or protons, n = number of e (e =1.6x10^-19)which is the elementary charge of protons or electrons.

__**F=kQ1Q2/r^2**__ ﻿is the formula for finding a force between 2 charged particles/objects, it is very similar to the gravitational formula!
 * k is Coulombs constant= 9x10^9


 * E.G.What is the force of attraction between 2 ping pong balls whose centres are 10 cm apart and the charges on them are +12 nanocoulombs and -15 nanocoulombs. __- nanocoulomb = 10^-9 C__**

F = k (12*10^-9)(-15*10^-9) / (0.1)^2 F=__0.000162N__