Electric+Potential+Energy

=Definition of Electric Potential Energy (PE electric )=


 * Electric Potential Energy** = -(charge x electric field strength x displacement from the reference point in the direction of the field)

Equation
q=charge E=uniform electric field d=displacement in the direction of the electric field
 * PE electric ** = -qEd

//also can be written as://
 * PE electric ** = k C [(q 1 q 2 )/r]

Signs
An electric field points in the direction it would make a positive charge move.

The 'd' in the //(PE electric = -qEd)// equation is positive when the charge is moving __in the direction__ of the electric field.

The negative sign indicates that the electrical potential energy will increase if the charge is negative and decrease if the charge is positive.

Units
Joules

=Example of Electrical Potential Energy=

Types of Energy:
1. Kinetic 2. Potential -Gravitational -Elastic -Rotational
 * -Electric**

=Comparison to Gravity=

PE gravitational = mgh m-mass, g-gravitational field, h-height

PE electric = -qEd q-charge, E-electric field, d-displacement