The temperature of the wire is kept constant using a switch and small currents. A voltage–current characteristic graph (V-I graph) can be plotted, with voltage on the y-axis and current on the x-axis.

Georg Ohm was a 28-year–old high school physics teacher in 1825 when he first decided to study the effect of the metal in a circuit on the current produced. This experiment was possible because five ...

In a review just published in Nature Materials, researchers take aim at the oldest principle in electronics: Ohm's law. Their article, "Nonlinear transport in non-centrosymmetric systems," brings ...