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Why do the values of resistivity differ so much between materials?
Resistivity varies because valence electrons vary, along with the lattice structure of the material.
Does resistivity depend on length and area of the cross section of the material?
No. Resistivity is a material constant, defined for a standard size of material. For another size of material, it can be calculated. Resistivity is the same for any piece of material; resistance can change.
What is dimension for resistivity?
Resistivity is equal to the product or resistance n area over divided over length ....is dimension is [m^1 l^3 t^-4 a^-3]
What is the effect on pressure of doubling the surface area on which a force is being exerted?
pressure will be halved
Does a thin wire has more RESISTIVITy or a thin wire of the same material?
Resistivity is a property of the material only, not of the dimensions of the wire. The resistance of a wire is the resistivity times the length divided by the cross-section area. So a long wire has more resistance, a thicker wire has less resistance, even if they are both made of copper with the same resistivity.
How does resistivity vary if length and area are doubled?
if length is doubled then resistivity increases&when area is doubled resistivity decreases.
How do you calculate a cross-sectional area When all you know is resistance resistivity and length?
I think the equation you are looking for is Resistance (ohms) = Resistivity * Length / Area or R=p*L/A. This is the resistance of a circular wire with cross-section of A, length of L, and material with resistivity p. So to get area: Area = Resistivity * Length / Resistance.
What happens to the resistance as the area increases?
Double the area means half the resistance. Resistance = resistivity times length / area. Resistivity is a property of the material only.
When will be the effect of Volume and Surface Area of Spherewhen cut in to two half?
The volume will be halved and the surface area will be halved but with the base area of pi*radius2 added to it
Why does the electrical resistivity of a conductor does not depend on its dimensions?
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
What happens to the resistance when length is doubled n area is quadrupled?
It is halved.It is halved.It is halved.It is halved.
Why do the values of resistivity differ so much between materials?
Resistivity varies because valence electrons vary, along with the lattice structure of the material.
What happens to the area of a rectangle if the length decreases by one-half?
The area is directly proportional to both the length andwidth of a rectangle. Thus if one is halved then the area is also halved.
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.
The resistance of a wire depends on the?
The length, cross-sectional area, and resistivity. As resistivity changes with temperature, temperature indirectly affects resistance.
What is resistivity of material?
the electrical resistance of a conductor through unit cross-sectional area per length is called "resistivity of material"
Do resistivity depend upon area of crosss-section?
No. Resistance does.
