Understanding 2D Electric Fields: A Fundamental Tool in Physics

What is an Electric Field?

An electric field is a vector field that permeates space around any charged particle or object. It describes the force per unit charge that would be exerted on a stationary test charge placed at any point in the field.

The 2D Electric Field Simulator allows you to visualize these fields by placing positive and negative charges, which then generate electric fields according to Coulomb's law.

Coulomb’s Law and Its Role

Coulomb's law states that the force between two point charges is directly proportional to the product of their magnitudes and inversely proportional to the square of the distance between them.

In the simulator, you can observe how changing charge magnitude or position affects the resulting electric field lines.

Field Lines and Equipotential Contours

Electric field lines are a visual representation of the direction and strength of an electric field. They start from positive charges and end at negative ones, with their density indicating the field's strength.

Equipotential contours represent surfaces where the potential energy is constant; these contours are always perpendicular to the field lines.

Behavior of Test Charges

A test charge placed in an electric field will experience a force that can be calculated using Coulomb's law. The 2D Electric Field Simulator allows you to drag and observe how these charges move according to the local field.

This dynamic interaction helps understand concepts like acceleration, potential energy changes, and work done by the electric field.

Frequently asked questions

Try it live

Everything above runs in your browser — open 2D Electric Field Simulator and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.