Continuing the course on Easy Java Simulation, I did this simple simulation on the Potentiometer, which allows students to first predict, and then verify the position of a jockey to achieve null deflection of a galvanometer.
Click on the image below to try it out and do give me your feedback. I'll try to improve it with whatever little skill I have.
I decided on a DC circuit simulation as I could not find many on Open Source Physics EJSS platform. With this as a template, I guess I can develop more simulations on the same topic when I have time.