Elecric Field Intensity and Electric Potential

Electric Field Intensity:

Electric field intensity is defined many ways depending upon the type of Electric field we apply. 

• For a Uniform Electric field  Electric field intensity is defined as voltage per unit length. i.e.

       |E|=Voltage Existing/spacing = V/d (volt/meter)

• For a non Uniform Field i.e. Field is varied with distance then Electric field intensity is defined as the negative rate of change of Applied field Vector with respect to the distance. i.e.

                              E= -dV/dx (volt/meter) 

 Electric field is always acts in the direction positive(+ve) Potential to (-ve)  potential. 

Electric Potential:

• Theoretically is defined as the amount of work done  to bring a electron from infinity (i.e. outside of range) to the field of any static unit positive charge.

• Mathematically is the integration of electric field intensity for a specific region of interest.  It is always negative since electric field acts in the direction of positive potential to negative potential.

it is denoted as V. Unit is Volt (V)