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- Electrical_resistance_and_conductance abstract "The electrical resistance of an electrical conductor is the opposition to the passage of an electric current through that conductor. The inverse quantity is electrical conductance, the ease with which an electric current passes. Electrical resistance shares some conceptual parallels with the mechanical notion of friction. The SI unit of electrical resistance is the ohm (Ω), while electrical conductance is measured in siemens (S). An object of uniform cross section has a resistance proportional to its resistivity and length and inversely proportional to its cross-sectional area. All materials show some resistance, except for superconductors, which have a resistance of zero. The resistance (R) of an object is defined as the ratio of voltage across it (V) to current through it (I), while the conductance (G) is the inverse:For a wide variety of materials and conditions, V and I are directly proportional to each other, and therefore R and G are constant (although they can depend on other factors like temperature or strain). This proportionality is called Ohm's law, and materials that satisfy it are called "Ohmic" materials.In other cases, such as a diode or battery, V and I are not directly proportional, or in other words the I–V curve is not a straight line through the origin, and Ohm's law does not hold. In this case, resistance and conductance are less useful concepts, and more difficult to define. The ratio V/I is sometimes still useful, and is referred to as a "chordal resistance" or "static resistance", as it corresponds to the inverse slope of a chord between the origin and an I–V curve. In other situations, the derivative may be most useful; this is called the "differential resistance".".
- Electrical_resistance_and_conductance individualisedGnd "4128466-5".
- Electrical_resistance_and_conductance thumbnail ResistanceHydraulicAnalogy.svg?width=300.
- Electrical_resistance_and_conductance wikiPageExternalLink The_Notion_of_Electrical_Resistance_by_Soliverez.
- Electrical_resistance_and_conductance wikiPageExternalLink index.html''Clemson.
- Electrical_resistance_and_conductance wikiPageID "61577".
- Electrical_resistance_and_conductance wikiPageRevisionID "605293116".
- Electrical_resistance_and_conductance align "right".
- Electrical_resistance_and_conductance alt "Differential versus chordal resistance".
- Electrical_resistance_and_conductance alt "Negative differential resistance".
- Electrical_resistance_and_conductance caption "The IV curve of a component with negative differential resistance, an unusual phenomenon where the IV curve is non-monotonic.".
- Electrical_resistance_and_conductance caption "The IV curve of a non-ohmic device . The static resistance at point A is the inverse slope of line B through the origin. The differential resistance at A is the inverse slope of tangent line C.".
- Electrical_resistance_and_conductance direction "horizontal".
- Electrical_resistance_and_conductance gnd "4128466".
- Electrical_resistance_and_conductance hasPhotoCollection Electrical_resistance_and_conductance.
- Electrical_resistance_and_conductance image "DifferentialChordalResistance.svg".
- Electrical_resistance_and_conductance image "Negative_differential_resistance.svg".
- Electrical_resistance_and_conductance typ "s".
- Electrical_resistance_and_conductance width "110".
- Electrical_resistance_and_conductance width "200".
- Electrical_resistance_and_conductance width "90".
- Electrical_resistance_and_conductance subject Category:Electricity.
- Electrical_resistance_and_conductance subject Category:Electromagnetism.
- Electrical_resistance_and_conductance subject Category:Physical_quantities.
- Electrical_resistance_and_conductance type Agent.
- Electrical_resistance_and_conductance type Agent.
- Electrical_resistance_and_conductance type Thing.
- Electrical_resistance_and_conductance comment "The electrical resistance of an electrical conductor is the opposition to the passage of an electric current through that conductor. The inverse quantity is electrical conductance, the ease with which an electric current passes. Electrical resistance shares some conceptual parallels with the mechanical notion of friction. The SI unit of electrical resistance is the ohm (Ω), while electrical conductance is measured in siemens (S).".
- Electrical_resistance_and_conductance label "Electrical resistance and conductance".
- Electrical_resistance_and_conductance label "Elektrische weerstand (eigenschap)".
- Electrical_resistance_and_conductance label "Elektrischer Widerstand".
- Electrical_resistance_and_conductance label "Resistencia eléctrica".
- Electrical_resistance_and_conductance label "Resistenza elettrica".
- Electrical_resistance_and_conductance label "Resistência elétrica".
- Electrical_resistance_and_conductance label "Rezystancja".
- Electrical_resistance_and_conductance label "Résistance (électricité)".
- Electrical_resistance_and_conductance label "Электрическое сопротивление".
- Electrical_resistance_and_conductance label "مقاومة وموصلية كهربائية".
- Electrical_resistance_and_conductance label "电阻".
- Electrical_resistance_and_conductance label "電気抵抗".
- Electrical_resistance_and_conductance sameAs Elektrický_odpor.
- Electrical_resistance_and_conductance sameAs Elektrischer_Widerstand.
- Electrical_resistance_and_conductance sameAs Ηλεκτρική_αντίσταση.
- Electrical_resistance_and_conductance sameAs Resistencia_eléctrica.
- Electrical_resistance_and_conductance sameAs Erresistentzia_elektriko.
- Electrical_resistance_and_conductance sameAs Résistance_(électricité).
- Electrical_resistance_and_conductance sameAs Hambatan_listrik.
- Electrical_resistance_and_conductance sameAs Resistenza_elettrica.
- Electrical_resistance_and_conductance sameAs 電気抵抗.
- Electrical_resistance_and_conductance sameAs 전기_저항.
- Electrical_resistance_and_conductance sameAs Elektrische_weerstand_(eigenschap).
- Electrical_resistance_and_conductance sameAs Rezystancja.
- Electrical_resistance_and_conductance sameAs Resistência_elétrica.
- Electrical_resistance_and_conductance sameAs m.0gp12.
- Electrical_resistance_and_conductance sameAs Q25358.
- Electrical_resistance_and_conductance sameAs Q25358.
- Electrical_resistance_and_conductance wasDerivedFrom Electrical_resistance_and_conductance?oldid=605293116.
- Electrical_resistance_and_conductance depiction ResistanceHydraulicAnalogy.svg.
- Electrical_resistance_and_conductance isPrimaryTopicOf Electrical_resistance_and_conductance.