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This category pertains to the measurable electrical values or phenomena that characterize the behaviour of electronic circuits, components, or semiconductors Wikimedia Commons has media related to Electrical parameters .
The constants listed here are known values of physical constants expressed in SI units; that is, physical quantities that are generally believed to be universal in nature and thus are independent of the unit system in which they are measured.
where J is the current density at a given location in a resistive material, E is the electric field at that location, and σ is a material-dependent parameter called the conductivity, defined as the inverse of resistivity ρ . This reformulation of Ohm's law is due to Gustav Kirchhoff. [5]
Then the electric field and current density are constant and parallel, and by the general definition of resistivity, we obtain ρ = E J , {\displaystyle \rho ={\frac {E}{J}},} Since the electric field is constant, it is given by the total voltage V across the conductor divided by the length ℓ of the conductor:
electric displacement field also called the electric flux density coulomb per square meter (C/m 2) density: kilogram per cubic meter (kg/m 3) diameter: meter (m) distance: meter (m) direction: unitless impact parameter meter (m) differential (e.g. ) varied depending on context
Electrical conductivity: σ: Measure of a material's ability to conduct an electric current S/m L −3 M −1 T 3 I 2: scalar Electric potential: φ: Energy required to move a unit charge through an electric field from a reference point volt (V = J/C) L 2 M T −3 I −1: extensive, scalar Electrical resistance: R: Electric potential per unit ...
lumped parameters Describes an electrical network where the circuit elements are small compared to the wavelengths of the signals passing through it. Lyapunov stability A criterion for stability of a dynamical system; if disturbances from a stable point reduce and the system returns to that stable point, it can be said to be Lyapunov stable.
Measurement of electrical quantities may be done to measure electrical parameters of a system. Using transducers , physical properties such as temperature, pressure, flow, force, and many others can be converted into electrical signals, which can then be conveniently measured and recorded.