1. Draw your own electrodes and/or metal conductors, or use dropdown to select standard electrodes.
(Everything red will be connected to battery +, black to battery -, and 'metal' not connected.)
2. Click "calculate potentials" to have the computer calculate potentials and E-fields everywhere.
3. Choose a color, turn on the voltmeter, use probe to draw dots to map out different equipotential lines.
4. Check the boxes to show equipotential lines, E-fields, charge density, etc.