The experimental report of college physics experiment tries to give an example of an experiment that can be carried out by simulation method.
Simulation of electrostatic field with steady current field. Because electrostatic field is not easy to be measured directly, current field is often used to simulate electrostatic field in experiments. This is because the mathematical forms of current density vector of current field and electric field intensity vector of electrostatic field are very similar, which makes the two fields have many similarities.