Definition:Electric Field

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An electric field is a vector field that associates to each point in space the (electrostatic or Coulomb) force per unit of charge exerted on an infinitesimal positive test charge at rest at that point.

Electric Field Strength

Electric field strength is the measure of the intensity of an electric field.

It is defined as:

$\mathbf E = \dfrac {\mathbf F} q$


$\mathbf E$ denotes the electric field strength at a given point
$\mathbf F$ denotes the force exerted on a test charge $q$ by $\mathbf E$ at that point.

Electric field strength is a vector quantity.

Also see

  • Results about electric fields can be found here.