The electric potential near two plates with fixed potential.

An Introduction to Computer Simulation Methods
Chapter 10: Electrodynamics

We compute the electric fields due to static and moving charges, describe methods for computing the electric potential in boundary value problems, and solve Maxwell's equations numerically.

Chapter 10 PDF (Partial)

Models

The following EJS models are described in Chapter 10 of the EJS adaptation of An Introduction to Computer Simulation Methods.

Point Charge Electric Field: The electric field from multiple point charges.
Electric Field Lines: Draws electric field lines in the vicinity of point charges.
Laplace Equation: Uses the relaxation method to find the potential V(x,y) in a charge-free region bounded by conductors.

An Introduction to Computer Simulation Methods Chapter 10: Electrodynamics

Models

An Introduction to Computer Simulation Methods
Chapter 10: Electrodynamics