https://en.m.wikipedia.org/wiki/Negative_resistance https://en.m.wikipedia.org/wiki/Negative_resistance > In electronics, negative resistance (NR) is a propert

https://en.m.wikipedia.org/wiki/Negative_resistance https://en.m.wikipedia.org/wiki/Negative_resistance > In electronics, negative resistance (NR) is a property of some electrical circuits and devices in which an increase in voltage across the device's terminals results in a decrease in electric current through it. It's not a "free energy" thing at all.