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Encyclopedia > Susceptance

In electrical engineering, the susceptance (B) is the imaginary part of the admittance. In SI units, the susceptance is measured in siemens. In June of 1887, Oliver Heaviside used the term "permittance" which later became susceptance. Electrical engineering is an engineering discipline that deals with the study and application of electricity and electromagnetism. ... In electrical engineering, the admittance (Y) is the inverse or reciprocal of the impedance (Z). ... The International System of Units (abbreviated SI from the French phrase, Système International dUnités) is the most widely used system of units. ... The siemens (symbol: S) is an SI derived unit of measurement for electric conductance, being the inverse of the ohm (Ω), named after Werner von Siemens. ... Oliver Heaviside (May 18, 1850 – February 3, 1925) was a self-taught British engineer, mathematician and physicist. ... In electrical engineering, the susceptance (B) is the imaginary part of the admittance. ...

where

Y is the admittance, measured in siemens

G is the conductance, measured in siemens Conductance can refer to: Electrical conductance, the reciprocal of electrical resistance. ...

B is the susceptance, measured in siemens.

The admittance (Y) is the inverse of the impedance (Z)

where

Z is the impedance, measured in ohms In electrical engineering, impedance is a measure for the manner and degree a component resists the flow of electrical current if a given voltage is applied. ... The ohm is the SI derived unit of electrical resistance (derived from the ampere and the watt). ...

R is resistance, measured in ohms Electrical resistance is a measure of the degree to which an electrical component opposes the passage of current. ...

Note: The susceptance is NOT the inverse of the reactance.

The magnitude of admittance is given by:

## SI electricity units

SI electromagnetism units

edit  (http://en.wikipedia.org/w/index.php?title=Template:SI_electromagnetism_units&action=edit) The International System of Units (abbreviated SI from the French phrase, Système International dUnités) is the most widely used system of units. ... Electromagnetism is the physics of the electromagnetic field: a field, encompassing all of space, composed of the electric field and the magnetic field. ...

Name Symbol Dimensions Quantity
ampere (SI base unit) A A Current
coulomb C A·s Electric charge, Quantity of electricity
volt V J/C = kg·m2·s−3·A−1 Potential difference
ohm Ω V/A = kg·m2·s−3·A−2 Resistance, Impedance, Reactance
ohm metre Ω·m kg·m3·s−3·A−2 Resistivity
watt W V·A = kg·m2·s−3 Electrical power
farad F C/V = kg−1·m−2·A2·s4 Capacitance
farad per metre F/m kg−1·m−3·A2·s4 Permittivity
siemens S Ω−1 = kg−1·m−2·s3·A2 Conductance, Admittance, Susceptance
siemens per metre S/m kg−1·m−3·s3·A2 Conductivity
weber Wb V·s = kg·m2·s−2·A−1 Magnetic flux
tesla T Wb/m2 = kg·s−2·A−1 Magnetic flux density
ampere per metre A/m m−1·A magnetic induction
ampere-turns per weber A/Wb kg−1·m−2·s2·A2 Reluctance
henry H Wb/A = V·s/A = kg·m2·s−2·A−2 Inductance
henry per metre H/m kg·m·s−2·A−2 Permeability
(dimensionless) χ - Magnetic susceptibility Results from FactBites:

 Susceptance - Biocrawler (74 words) In electrical engineering, the susceptance (B) is the imaginary part of the admittance. In SI units, the susceptance is measured in siemens. Note: The susceptance is NOT the inverse of the reactance.
 What is susceptance? - a definition from Whatis.com - see also: B (395 words) Susceptance (symbolized B) is an expression of the ease with which alternating current (AC) passes through a capacitance or inductance. Conductance and susceptance combine to form admittance, which is defined in terms of two-dimensional quantities known as complex numbers. As the inductance of a component increases, its susceptance becomes smaller negatively (that is, it approaches zero from the negative side) in imaginary terms, assuming the frequency is held constant.
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