⚡ Electric Fields & Potential

Electric Fields Simulator — Interactive Charges & Potential

This electric field simulator lets you place positive and negative point charges on a canvas and instantly visualize the resulting field in four modes: field lines, vector arrows, equipotential contours, and a potential heat map. Seven built-in presets cover single charge, dipole, quadrupole, two positive charges, parallel plates, triangle arrangement, and ring of charge. A measurement probe reads |E|, V, Ex, and Ey at any canvas position on hover.

What you can do in this simulation

• Place positive charges with click, negative with Shift+click; drag to reposition
• Switch between Field Lines, Vectors, Potential map, and Equipotential modes
• Choose from 7 preset configurations including dipole and parallel plates
• Adjust charge magnitude (1–20 nC) and field line density with sliders
• Use measurement probe to read field strength and potential at any point

Concepts covered

electric field · electric potential · Coulomb's law · equipotential lines · field lines · electrostatics

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