Electric Field Visualizer
Interactive simulation — adjust parameters and watch the visualization update in real time.
How it works
Point charges in the plane (Coulomb model). The electric field E⃗ at each grid point is the vector sum of contributions qᵢ r̂ᵢ/rᵢ² (same direction as in your textbook). Arrows point in the direction a positive test charge would be pushed.
Key equations
E⃗ = Σ k qᵢ r̂ᵢ / rᵢ² (here k absorbed into relative q)