Unit pS
Name picosiemens
Category Electrical Conductance
Details The petasiemens (PS) is a unit of electrical conductance in the International System of Units (SI). Conductance is the measure of a material's ability to allow the flow of electric current. It is the reciprocal of electrical resistance, which quantifies the opposition to the flow of electric current.

The fundamental unit of conductance in the SI system is the siemens (S), named after the German inventor and industrialist Ernst Werner von Siemens. A petasiemens is equal to 10^15 siemens. This means that one petasiemens (1 PS) corresponds to one quadrillion (1,000,000,000,000,000) siemens.

Petasiemens is typically not used in day-to-day applications due to its large scale, but it may be encountered in fields like scientific research, high-power electrical systems, or the study of materials with extremely low resistance, such as superconductors.