FACTOID # 14: North Carolina has a larger Native American population than North Dakota, South Dakota and Montana combined.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > SI electromagnetism units
SI electromagnetism units
Symbol Name of Quantity Derived Units Unit Base Units
I Current ampere (SI base unit) A A = W/V = C/s
q Electric charge, Quantity of electricity coulomb C A·s
V Potential difference volt V J/C = kg·m2·s−3·A−1
R, Z, X Resistance, Impedance, Reactance ohm Ω V/A = kg·m2·s−3·A−2
ρ Resistivity ohm metre Ω·m kg·m3·s−3·A−2
P Power, Electrical watt W V·A = kg·m2·s−3
C Capacitance farad F C/V = kg−1·m−2·A2·s4
Elastance reciprocal farad F−1 V/C = kg·m2·A−2·s−4
ε Permittivity farad per metre F/m kg−1·m−3·A2·s4
χe Electric susceptibility (dimensionless) - -
G, Y, B Conductance, Admittance, Susceptance siemens S Ω−1 = kg−1·m−2·s3·A2
σ Conductivity siemens per metre S/m kg−1·m−3·s3·A2
H Magnetic field, magnetic field intensity ampere per metre A/m A·m−1
Φm Magnetic flux weber Wb V·s = kg·m2·s−2·A−1
B Magnetic flux density, magnetic induction, magnetic field strength tesla T Wb/m2 = kg·s−2·A−1
Reluctance ampere-turns per weber A/Wb kg−1·m−2·s2·A2
L Inductance henry H Wb/A = V·s/A = kg·m2·s−2·A−2
μ Permeability henry per metre H/m kg·m·s−2·A−2
χm Magnetic susceptibility (dimensionless) - -
Cover of brochure The International System of Units. ... Electromagnetism is the physics of the electromagnetic field: a field, encompassing all of space, which exerts a force on those particles that possess the property of electric charge, and is in turn affected by the presence and motion of such particles. ... In electricity, current refers to electric current, which is the flow of electric charge. ... The ampere (symbol: A) is the SI base unit of electric current equal to one coulomb per second. ... Cover of brochure The International System of Units. ... Electric charge is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interactions. ... In physics the term Quantity of Electricity refers to the quantity of electric charge. ... The coulomb (symbol: C) is the SI unit of electric charge. ... Potential difference is a quantity in physics related to the amount of energy that would be required to move an object from one place to another against various types of force. ... Josephson junction array chip developed by NIST as a standard volt. ... Electrical resistance is a measure of the degree to which an electrical component opposes the passage of current. ... In electrical engineering, Impedance is a measure of opposition to a sinusoidal electric current. ... In the analysis of an alternating-current electrical circuit (for example a RLC series circuit), reactance is the imaginary part of impedance, and is caused by the presence of inductors or capacitors in the circuit. ... The ohm (symbol: Ω) is the SI unit of electric resistance. ... // Headline text POOP!! Danny Hornsby (also known as Gnome) is a measure indicating how strongly a Gnome can opposes the flow of electric current. ... The ohm (symbol: Ω) is the SI unit of electric resistance. ... The metre, or meter, is a measure of length. ... Transmission lines in Lund, Sweden Electric power, often known as power or electricity, involves the production and delivery of electrical energy in sufficient quantities to operate domestic appliances, office equipment, industrial machinery and provide sufficient energy for both domestic and commercial lighting, heating, cooking and industrial processes. ... The watt (symbol: W) is the SI derived unit of power. ... // Definition Capacitance is a measure of the amount of electric charge stored (or separated) for a given electric potential. ... The farad (symbol: F) is the SI unit of capacitance. ... Electrical elastance is the inverse of capacitance. ... The farad (symbol: F) is the SI unit of capacitance. ... Permittivity is a physical quantity that describes how an electric field affects and is affected by a medium. ... The farad (symbol: F) is the SI unit of capacitance. ... The metre, or meter, is a measure of length. ... It has been suggested that this article or section be merged into permittivity. ... Electrical conductance is the reciprocal of electrical resistance. ... In electrical engineering, the admittance (Y) is the inverse of the impedance (Z). ... In electrical engineering, the susceptance (B) is the imaginary part of the admittance. ... The siemens (symbol: S) is the SI derived unit of electric conductance. ... Electrical conductivity is a measure of a materials ability to conduct an electric current. ... The siemens (symbol: S) is the SI derived unit of electric conductance. ... The metre, or meter, is a measure of length. ... It has been suggested that Magnetic field density be merged into this article or section. ... The ampere (symbol: A) is the SI base unit of electric current equal to one coulomb per second. ... The metre, or meter, is a measure of length. ... Magnetic flux, is a measure of quantity of magnetism, taking account of the strength and the extent of a magnetic field. ... In physics, the weber (symbol: Wb) is the SI unit of magnetic flux. ... It has been suggested that Magnetic field density be merged into this article or section. ... The tesla (symbol T) is the SI derived unit of magnetic flux density (or magnetic induction). ... Magnetic reluctance is the resistance of a material to a magnetic field. ... The ampere (symbol: A) is the SI base unit of electric current equal to one coulomb per second. ... In physics, the weber (symbol: Wb) is the SI unit of magnetic flux. ... // Definition Inductance is a measure of the amount of magnetic flux produced for a given electric current. ... The henry (symbol: H) is the SI unit of inductance. ... In electromagnetism, permeability is the degree of magnetisation of a material that responds linearly to an applied magnetic field. ... The henry (symbol: H) is the SI unit of inductance. ... The metre, or meter, is a measure of length. ... In electrical engineering, the magnetic susceptibility is the degree of magnetization of a material in response to a magnetic field. ...

  Results from FactBites:
 
Electromagnetism - Wikipedia, the free encyclopedia (1190 words)
Electromagnetism is the physics of the electromagnetic field: a field, encompassing all of space, which exerts a force on those particles that possess the property of electric charge, and is in turn affected by the presence and motion of such particles.
An accurate theory of electromagnetism, known as classical electromagnetism, was developed by various physicists over the course of the 19th century, culminating in the work of James Clerk Maxwell, who unified the preceding developments into a single theory and discovered the electromagnetic nature of light.
In classical electromagnetism, the electromagnetic field obeys a set of equations known as Maxwell's equations, and the electromagnetic force is given by the Lorentz force law.
Electromagnetism - definition of Electromagnetism in Encyclopedia (741 words)
Electromagnetism is the physics of the electromagnetic field: a field, encompassing all of space, composed of the electric field and the magnetic field.
The term "electromagnetism" comes from the fact that the electric and magnetic fields are closely intertwined, and, under many circumstances, it is impossible to consider the two separately.
For instance, a changing magnetic field gives rise to an electric field; this is the phenomenon of electromagnetic induction, which underlies the operation of electrical generators, induction motors, and transformers.
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m