In this simulation, you can visualize the charge flow around a circuit, and see what happens when the battery voltage or the resistor resistance is changed. You can also sketch a current vs. voltage graph for a given resistor, by choosing a resistor and then using the voltage slider to cover the full range of voltages.
First posted 12-27-2015. Written by Andrew Duffy
Updated 2-06-2017 to start with visualization of actual charge flow.
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