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The class of materials called superconductors have no DC resistance when cooled below their transition temperature. This temperature varies with the material and is below 20K for metallic superconductors and generally below about 100K for oxide or "High Temperature" superconductors
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoWiki User
∙ 10y agoThe so-called "superconductors" have no electrical resistance.
It's not just very low. It's precisely zero, such that a current can
circulate in a loop of superconducting material for months without
voltage and without any change in its magnitude.
Wiki User
∙ 13y agoall the conductors such as metal and wires does not resist electricity
only superconductors have no resistance and that only happens at cryogenic temperatures.
Wiki User
∙ 11y agoA superconductor.
Wiki User
∙ 15y agosuperconductors
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What type of material allows a charge to move freely through it?
A material through which an electric current flows easily is called an electrical conductor. Many metals, especially silver and copper, are excellent electrical conductors.
True or false ohm's law describes the electrical properties of some conducting materials?
True: Resistance R = voltage V / amperage IResistance is the conducting material.
The rate at which charges move through a conductor is called?
there is no name for the rate of charge transfer, but its inverse is resistance: resistance is how much charge is resisted, so a low resistance material will have a larger rate of change of charge than a high resistance material.
What is electrical conductance?
Electrical conductivity is the measure of a material accommodates the transport of electric charge. Its SI derived unit is the siemens per metre, (A2s3m−3kg−1) (named after Werner von Siemens) or, more simply, Sm−1. It is the ratio of the current density to the electric field strength or, in more practical terms, is equivalent to the electrical conductance measured between opposite faces of a 1-metre cube of the material under test
What material allows electric current to pass through?
Electric current flows in conducting materials such as metals. The best conductor of electric current is silver, followed closely by copper and then aluminium.
Is electrical resistance and electrical resistivity the same?
No. Resistivity is a material property, and is defined as the resistance for a piece of material of some standard size.
What determines the electrical resistance of a material?
The material itself and the Gage
A material that has no electrical resistance?
That's a "superconductor".
What is the meaning of electrical resistance?
Definition Of Resistance In Electrical:Property of a material to oppose the flow of electric current through it is called Resistance.
Does material composing the body effect the electrical resistance of a body?
Yes.
Why is electrical resistivity important to a design engineer?
electrical resistance increases current flow decreases.so to know the current flow in the network ,electrical resistance is required.AnswerResistivity is important, because it is one of the three factors that affect the resistance of a material. The other factors are the length and cross-sectional area of the material.
What are the Factors that determine resistance value of electrical material?
The factors that determine resistance are thickness, length, temperature, and the conductivity of the resistance of an object
When current passes through a conductor what makes the conductor heat up?
The electrical resistance of the material. All materials have some electrical resistance except for superconductors.
Does resistance flow through a circuit?
No. Resistance does not flow. Resistance is the characteristic of a material that resists the movement of electrons and thus the flow of electrical current.
Electrical resistance in a wire depends on the wire's?
It's dependent on the wire's composition. That is, what material it is made of. <<>> The electrical resistance in a wire depends on the wire's length and cross sectional area.
What is insulating material used for?
insulating materials have low thermal/electrical conductivity values and hence can be used in applications where resistance to heat or resistance to the passage of electrical current is required.
What is resistivity of material?
the electrical resistance of a conductor through unit cross-sectional area per length is called "resistivity of material"
