Name picoohm
Category Electrical Resistance
Details A petaohm (PΩ) is a unit of electrical resistance in the International System of Units (SI). It represents one quadrillion (10^15) ohms, which is a measure of the amount of resistance a material or component provides against the flow of electric current. This unit is used primarily for very large resistances, such as those found in insulators or high-voltage transmission systems.

An ohm (Ω) is the basic unit of electrical resistance, named after Georg Simon Ohm, a German physicist who formulated Ohm's Law. In SI derived units, 1 ohm is equivalent to one volt per ampere (V/A). To represent increasingly larger resistances, engineers and scientists use prefixes like kiloohm (kΩ), megaohm (MΩ), gigaohm (GΩ), and ultimately, petaohm (PΩ).