Electrical resistivity is a measure of how a material opposes the flow of electric current. Copper is used for electrical lines because it has a low resistance relative to its cost. Gold and silver also have a low resistance, but imagine how expensive the power cord for your computer would be if it were made of gold!
The specific resisitivity of a material is determined by measuring the resistance of a test conductor having unit length and unit cross sectional area.
AnswerIn fact, there is no such expression as 'specific resistivity'; you are probably thinking of the term 'specific resistance', which is an obsolete term for 'resistivity', which is a physical property of a material.
As the original answer explains, resistivity is defined as 'the resistance of a unit length of a material of uniform cross section'.
In SI, this definition equates to 'the resistance of between opposite sides of a one-metre cube of a material'. Note that a 'metre cube' is not the same thing as 'cubic metre'! It literally means a cube, with one-metre sides!
The SI unit for resisitivity is the ohm metre; in North America, the unit is the ohm circular mill per foot.
Resistivity provides us with a means of comparing the resistances of different materials while eliminating the physical dimensions involved.
resistivity and resistance are two diff. things...........resistance depends on length and thickness resisitivity too depends on the area and length resistivity=resistance*area/length
Resistance of a conductor is defined by the specific resistivity, area of cross section and the length of the conductor. R = rL/A, where R is resistance in OHMs, r is specific resistance, L length in mm, A is area of cross section in sq mm
You can use a multi-meter to measure resistance. The specific portion of the meter for measuring resistance is called an ohmmeter.
For a specific voltage, current flow is inversely proportional to resistance.
Cell constant(C) = Resistance(R) X Specific Conductivity(K)
Nichrome has a high electrical resistivity.
yes it is a big diff in both of them air resistanceis in water butfrictionis every where
resistivity and resistance are two diff. things...........resistance depends on length and thickness resisitivity too depends on the area and length resistivity=resistance*area/length
The laws of resistance describes the resistance of a specific material. There are a total of four laws of resistance.
It was not a specific event. Resistance appeared where there was oppression.
No, resistance to antibiotics is not permanent. However, once you have a resistance, that antibiotic will no longer work for specific infections.
1/specific resistance
Resistance of a conductor is defined by the specific resistivity, area of cross section and the length of the conductor. R = rL/A, where R is resistance in OHMs, r is specific resistance, L length in mm, A is area of cross section in sq mm
Resistance of a conductor is defined by the specific resistivity, area of cross section and the length of the conductor. R = rL/A, where R is resistance in OHMs, r is specific resistance, L length in mm, A is area of cross section in sq mm
You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).
More information is needed as to what your terminology of D insulation is.
It means Different songs in different regions . In diff places have diff folks .