Question

The resistivity of a wire is proportional to its length as
(1) 1/L
(2 ) L^2
(3) 1/L^2
(4) L^0

Answer 1

Answer:

The resistivity of a wire is proportional to its length as 1/L.

Explanation:

Resistivity is the characteristic property of each material. It is a measure of the level of electrical conductivity of a material. The equation of resistivity (ρ - rho) is given as:

                   ρ = RA / L

Where R is the resistance of the material, A is the area of cross-section of the material, and L is the length of the material.

From the above equation, it is clear that the resistivity is inversely proportional to the length of the conducting material. Or resistivity of a wire is proportional to its length as 1/L.

Answer 2

The resistivity of a wire is proportional to its length as (1) 1/L.

• The measure of how actively the material obstructs the electric current flow in a specific conductor. Such a type of property is defined as the resistor.
• The resistivity of a conductor is represented as ρ and its S.I. unit is Ωm.
• The resistivity of a conductor varies directly with the resistance of that conductor.
• The factors on which the resistivity depends are the conductor's temperature(T), the material of the conductor, the conductor's cross-sectional area(A), and the conductor's total length(l).
• The resistivity(ρ) of the conductor is given as ρ=(R×A)/l, where R is the resistance of the conductor.