Picoampere Unit | All you need to know

A picoampere (pA) is a unit of electric current equal to one trillionth of an ampere (10^-12 amperes). Picoampere-level measurements represent extraordinarily weak electrical phenomena at the frontier of measurement capability. The unit appears in specialized physics research, single-molecule electronics, and discussions of quantum-scale electrical phenomena. Measurement at picoampere levels requires specialized equipment operating at the limits of practical sensitivity.