EXPLORE · CALCULATE · UNDERSTAND

The field, one vector at a time.

Move the charges. Choose a point. Follow the calculation as on the board.

Source charges

Coordinates in m · charges in μC

Snap to grid (0.5 m)

↗ Drag points on the diagram or enter their coordinates. All calculations update immediately.

Model conventions

Fixed point charges in vacuum. K = 9 · 10⁹ N·m²/C². V(∞) = 0. The moving charge is a test charge and does not alter the sources.