# Simulator for electrostatics

I am searching for a tool that visualizes the electric field/potential for simple electrostatic configurations like

• conducting/polarized sphere in an uniform electric field
• conducting/polarized sphere in a field generated by some simple charge density (like e.g. finite line charge)

I did a search on the internet but did not find anything useful. Does someone know such a tool (preferably for Linux). Thanks a lot.

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There are lot of visualizations available on mathematica demonstration site.