Document: Energy and Electric Field Activity-1
Abstract: Use this applet for a couple of minutes. Add multiple charges using the “add” button. To adjust the sign or mass of a charge to be added, you must first click on the “Properties” button, make your change and click “done”. The next charge you add will reflect your change. For some reason the Properties Box always appears in the far upper left corner of the screen – look here if you don‟t see it when you first select “properties”. Use the properties option to change the sign on some of your charges.