Voltage
Also: electric potential difference
Energy transferred per unit charge between two points.
Voltage is a difference in electric potential and must name polarity or reference; it drives current only through a complete circuit model.
- Units
- volt (V = J/C)
Example A 3.3 V pin is 3.3 joules per coulomb above its reference node.
Common misconception Voltage is not a substance stored at one isolated point.