Electric field strength

The electric field at a point is the electric force experienced by a small test charge placed there, divided by that charge. It is used to describe how charges produce forces on other charges in electrostatics.

\boldsymbol{E} = \frac{\boldsymbol{F}}{q}

What the symbols mean

electric field strength vector (N/C or V/m)
electric force vector on the test charge (N)
electric charge of the test charge (C)

About this formula

  • FieldPhysics
  • TopicElectrostatics
  • LevelHigh school
  • Also calledelectric field intensity, electric intensity, electric field definition, E equals F over q, force per unit charge, electric field from force on charge
  • SourceWikidata Q20989

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