Screen shot of two charges with force vectors (Coulomb's Force: What is Wrong?).

# What is Wrong: Finding (intentional) Errors in Electrostatics Models

This sampler of models for Electrostatics has a few examples of "standard" electrostatics simulations along with simulations that are intentionally incorrect. Navigate to the simulations by opening the folder and then double-clicking on the green triangle to launch.

#### Standard Examples:

- Charge Ring Trajectory (Electric Field and Coulomb's Law)
- Electric Multipole Field (Electric Field)
- Linear Charge Gauss Law (Gauss's Law)
- Spherical and Cylindrical Symmetry (Gauss's Law, Potential, Associated Laboratory)

#### What is Wrong?

- Coulomb Force (Coulomb's Law)
- Point Charge (Coulomb's Law, Electric Field)
- Dipole Trajectory (Electric Field)
- Electric Field Detector (Electric Field)
- Trajectory (Potential)
- Two Charges (Potential and Electric Field)

#### Solutions to What is Wrong?

- Coulomb Force (Coulomb's Law)

- Point Charge (Coulomb's Law, Electric Field)
- Dipole Trajectory (Electric Field)
- Electric Field Detector (Electric Field)
- Trajectory (Potential)

If you have EJS installed, you can see and edit the models included. Information about EJS is available at: <http://www.um.es/fem/Ejs/> and in the OSP ComPADRE collection <http://www.compadre.org/OSP/>.