Electricity+of+a+Static+Nature

Coulomb’s Law

So we all know the cliché “opposites attract” right? Well what about “likes repel”. I didn’t think so. The phrase we all say is actually part of a physics principle called Coulomb’s Law. There are # main properties an electric force has;
 * 1) it is directed along a line joining the two principles and is inversely proportional to the square separation distance between them (r)
 * 2) it is proportional to the product of the magnitudes of the charges |q 1 | & |q 2 | of the two particles
 * 3) it is attractive if the charges are of the opposite sign and repulsive if they have the same sign


 * EX **1 **; a charge of 5X10^-9 is located 3m from a charge of 3X10^-9. find the force exerted by one charge on the other **

electric potential energy potential energy is the ability to doing work. In electric potential energy the charge exerts a force on other charges giving it the ability to do work. K is coulombs constant Q is a fixed positive charge and q is a positive test charge in electric potential energy the units for energy are referred to as electric potential or voltage

EX2; find the potential energy of a charge of 20X10^-9 located .5m away from a 1X10^-9 charge

Resources College Physics Textbook []