# Electric field and potentialHTML5

## Summary

Like mass, electric charge is a fundamental property of matter. The unit of charge is the Coulomb (C).

An electric charge, as a point in space, creates a disturbance called an electric field.  It is a vector field (intensity or magnitude and, direction at any point in the field) represented by E.  The unit is the Volt per meter [V/m].

Click on the charge and slide to change its location.

Slide the slider on the left to change the charge value.

## Learning goals

• To identify properties of the electric field: direction, intensity, symmetry, superposition principle.
• To know how to define the field lines and equipotentials of a charge distribution.