The panel on the left displays an equipotential plot. The contours represent points at the exact same potential. Draw the electric field lines for this potential by dragging the pencil (at its tip) after clicking the "draw on" button. After you have drawn your lines, determine which field best corresponds to your potential plot. Start Potential
See how good your field lines are by redrawing and after redraw, double-click to see the actual equipotential lines. Enable Field Lines
Physlet: EField
Credits:
Problem by Mario Belloni
Script by Mario Belloni