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What is resistivity and conductivity and the relation between them?
Wiki User
∙ 8y ago
There are two expressions of the relationship between power and resistance. They are P = I2 x R (power equals current squared times resistance) and P = E2 / R (power equals voltage squared divided by resistance).
Wiki User
∙ 14y ago
Wiki User
∙ 8y agoIt is the resistance's measure that a circuit presents to a current when a voltage is connected. In quantitative terms, it is the intricate proportion of the voltage to the present in a substituting current (AC) circuit.
It is the equal of electrical resistivity, and measures a material's capacity to direct an electric current. It is regularly spoken to by the Greek letter σ, however κ (kappa) or γ (gamma) are additionally periodically utilized. Its SI unit is siemens per meter and CGSE unit is complementary s
Wiki User
∙ 8y agoResistivity is the limitation to electrical current flow. It is measured in Ohms, such that Ohm's law applies, i.e. ohms = volts / amperes.
Conductivity is the inverse, i.e. 1 / ohms. It is measured in siemens'
Answer
The original answer is incorrect, as it refers to resistance and conductance, NOT resistivity and conductivity!
Resistivity is defined as 'the resistance of a unit length of material of uniform cross-section'. In SI, this translates into the resistance between opposite faces of a one-metre cube of material. In SI, it is expressed in ohm metres.
Conductivity is defined as 'the reciprocal of resistivity'. In SI, it is expressed in siemens per metre.
Wiki User
∙ 13y agoOhm's Law states Voltage = Current x Resistance
Concuctivity = 1 / R. If we represent Conductivity by G then
Voltage = Current / G
Wiki User
∙ 12y agocool
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What are mathematical relationship between resistance and specificconductivity constant?
Cell constant(C) = Resistance(R) X Specific Conductivity(K)
In ohms what is the electrical resistance of water?
To figure the resistance of a substance in ohms, more information would be needed. Resistance is calculated by (resistivity)*(length)/(cross sectional area). First consider a wire conductor. Electrical resistivity is a property of the substance (it usually will vary with temperature). The thicker a wire is (larger cross sectional area) will lower the resistance. The longer the wire will increase the resistance. Now consider water. There is no 'wire' so the cross sectional area of whatever conductor is in contact with the wire will be a factor. A second conductor will need to be in contact with the water to complete the current path. The distance between the conductors is the length. Resistivity has a unit of ohms*meters; when divided by area and multiplied by length, the resulting unit is ohms. The reciprocal of resistivity is conductivity, which has units of Siemens/meter (Siemens is equivalent to 1/Ohms) I have posted a link to the Wikipedia article, listing conductivity values for several conducting elements (and water as well). Pure water with no impurities actually has a very high resistivity (low conductivity, which means not much current will flow). Pure water is not very common, and the type and amount of impurities affects the conductivity of the water sample. Conductivity of typical drinking water is in the range: 0.0005 to 0.05 Siemens per meter, so the reciprocal (resistivity) is 2000 Ohm*meters to 20 Ohm*meters. Note from the same chart that deionized water has a conductivity of 5.5 × 10-6 Siemens/meter --> resistivity = 181,818 ohm*meters.
What is the relationship between current and conductor crosssectional area?
Specific resistivity is directly proportional to area of cross section of the conductor and specific conductivity is the inverse of specific resistivity. So we can say , Specific conductivity is directly proportional to area of cross section of the conductor.
What is the working principle of a TDS meter?
1)what is the relation of total dissolved solid and conductivity of water? 2)What is the difference of the conductivity of treated water and raw water?
What is the difference between conductivity and mobility?
conductivity and mobility both are directly propertional
What is the relation between hardness and conductivity?
Resistivity R is the inverse of conductivity G, R=1/G.
Do wires that have high resistivity have high conductivity also?
No. In fact it is the opposite. Conductivity is the reciprocal of resistivity so a high resistivity means low conductivity. peace.
How do you convert conductivity to resistivity?
Conductivity is a measure of the ability of a substance to conduct electricity. Resistivity is a measure of how strongly a substance resists the flow of an electric current. So conductivity and resistivity are opposed to each other. A good conductor like copper has a low resistivity, and a good insulator like glass has a low conductivity and a high resistivity. Mathematically, conductivity and resistivity are inverses of each other, so it is quite easy to convert conductivity to resistance.
Is metal low conductivity?
No, metals have high conductivity but has low resistivity.
How Conduct related to conduction?
Conductivity is the inverse of resistivity. (i.e. conductivity = 1/resistivity) Resistivity is the resistance per metre of material. So a material will have a resistance of its length multiplied by its resistivity. So the resistance of an object is calculated from conductivity of the material from which it is made and its length by resistance = 1 / (conductivity * length) This makes no attempt to account for capacitance or inductance, so the impedance of a material would be calculated from conductivity as well as capacitance (or inductance) per unit length.
Can you represent electrical conductivity by finding its electrical resistance?
Conductivity is the reciprocal of resistivity, and is expressed in siemens per metre (S/m). Resistivity and, therefore, conductivity vary with temperature so are usually quoted at a specified temperature.Resistance is expressed in ohms. If you accurately measure the resistance, length, and cross-sectional area of a conductor, then you could determine its resistivity and, from that, its conductivity.
What is thermal resistivity of soils?
Resistivity is the opposite of conductivity. The thermal resistivity of soil is the degree to which soil impedes the flow of heat, or insulates against heat.
What is hafniums conductivity?
Electrical resistivity of hafnium: 331 nanoohms.m
What is the conductivity of polonium?
Electrical resistivity: 0, 40 microohm.meter.
What is conductivity for polonium?
The electrical resistivity of polonium is: 0, 40 microohm.m.
What is a electrical conductivity of technetium?
The electrical resistivity of technetium is 200 nanoohm.m.
What are the factors that effects the conductivity of pencil lead?
The percentage amount of graphite used affects the conductivity of pencil "lead". More the amount, lesser is its resistivity and greater the conductivity.
