Does resistivity change with thickness?

Resistivity depends on the nature of the substance and temperature. It does not depend on the dimensions, so resistivity of both is same. However the resistance of the thin wire will be more than that of the thick wire.

How does thickness affect the resistance?

The thicker the conductor, the smaller the resistance. The thinner the conductor, the smaller the resistance.

On what resistivity depends on?

temperature
Resistivity depends on the temperature of the material. At a constant temperature, we can assume the resistivity is a constant, and use Ohm’s Law which states that the resistance will be constant.

Does specific resistance depend on thickness?

Resistance of a wire is directly proportional to the length (l) of the wire and inversely proportional to the area of cross-section of the wire. So, the thicker wire will have more specific resistance as resistivity is directly proportional to area of cross-section.

How resistivity varies with thickness and cross section of material?

The resistance is inversely proportional to the cross sectional area of the conductor. Here, if cross sectional area of the conductor increases then the resistance of the conductor decreases and if Cross sectional area of the conductor decreases then the resistance of the conductor increases.

Does resistivity vary with length?

Resistivity is a property of a material and does not change with length though it may change with temperature. You can also say that the resistivity of a material is fixed or constant at a given temperature.

Does thicker wire increase resistance?

The relationship between resistance and wire length is proportional . The resistance of a thin wire is greater than the resistance of a thick wire because a thin wire has fewer electrons to carry the current. The relationship between resistance and the area of the cross section of a wire is inversely proportional .

On which factors resistivity of a conductor depends?

Note: The resistivity of a conductor depends only on the above mentioned three factors i.e., length, area of cross-section, and nature of the material of the conductor. Additionally, it also depends upon the physical conditions like temperature and pressure but is independent of its shape and size.

What determines the resistivity of a material?

Resistivity is the resistance per unit length and cross-sectional area. It is the property of the material that opposes the flow of charge or the flow of electric current. ρ = R A / L, where R is the resistance in ohms, A is the area of cross-section in square meters and L is the length in meters.

On what factors resistivity of wire depends?

The factors on which resistance of the wire depends are : (i) The length of the wire, resistance is directly proportional to the length of the wire. (ii) The cross-section of the wire, resistance is inversely proportional to the cross-section of the wire.

Is specific resistance and resistivity same?

Resistivity or specific resistance of a material is a measure of the resistance, which it offers to the flow of current through it. It is an intrinsic property of a material. Specific resistance depends on the composition, temperature, pressure of the material. The resistivity of a material is a scalar quantity.

What are the factors depends on resistance and resistivity?

Resistance of a conductor depends on length of the conductor and area of cross section of the conductor, resistivity and temperature. Resistivity is a materialistic property depends on the material and temperature of the conductor.

Does resistivity depend on the thickness of wire?

No,resistivity does not depend on thickness. It depends only on nature and temperature. Resistance (not resistivity ) depends on thickness. Thanks! Originally Answered: Does resistivity depend on thickness? Resistivity is independent of thickness or anything for that matter, it is a constant. How is resistance related to thickness of wire?

Does resistivity depend on the area of the sample?

A is the cross section area of the conductor, cm², which is the product of the width and the thickness of the sample ρ = R x A/L and the units would be ohms cm²/cm which reduces to ohm cm. So you see that resistivity does depend on the area of the sample, at least in its determination.

What is the unit of resistance resistivity?

Resistivity (ρ) has the units ohm-cm, which might make you think that only length is involved A is the cross section area of the conductor, cm², which is the product of the width and the thickness of the sample ρ = R x A/L and the units would be ohms cm²/cm which reduces to ohm cm.

What happens when you double the thickness of a wire?

So for example, if you double the thickness (ie:the diameter) of the wire, then the resistance of the thick wire will be 1/4 of that of the thin wire. The reason is that the resistance is inversely proportional to the cross sectional area of the conductor, which in turn is proportional to the square of the diameter.