Question

6. Mention the factors
on which resistivity of a metal depend?
​

Answer 1

The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size. A good conductor has less resistivity. On the other hand, a bad conductor or insulator has high resistivity. The length of wire - increasing the length increases the resistance.

Answer 2

Answer:

The resistance of the conductor depends on the following factors: The temperature of the conductor. The cross-sectional area of the conductor. Length of the conductor .

(a) The resistance of a conductor depends on thickness (cross sectional area of the wire), length and temperature.

Resistivity is defined as the measure of the resisting power of a specified material to the flow of an electric current.

R=ρ * l/ A

where R = Resistance of the conductor

ρ = Resistivity of the conductor

l = length of the conductor

A = Area of cross sectioni.e., ρ=R

l

A

Unit of resistivity is Ωm.

Explanation:

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