New listing 2012-2013 Free Comic Book Day Lot of 8 - Comicon-Marvel, DC, Simpsons, Tick.
Noun. 1. potential difference-the difference in electrical charge between two points in a circuit expressed in volts. electric potential, potential drop, voltage, potential. electrical phenomenon-a physical phenomenon involving electricity.
Potential difference (voltage) A potential difference, also called voltage, across an electrical component is needed to make a current flow through it. Cells or batteries often provide the potential difference needed. Potential difference is measured in volts, V. The potential difference across a component in a circuit is measured using a voltmeter. This must be connected in parallel with the component.