Physics, asked by tiwetth, 1 year ago

on which factor does the resistivity of conducting wire dependent​

Answers

Answered by samira28
4

Nature of material used


Rehan1102: cross sectional of a conductor
samira28: No
samira28: Temperature
Rehan1102: Its area of cross sectional of a conductor
Rehan1102: also temperature of a conductor
samira28: the question is about resistivity not resistance. Resistivity is the resistance of an object in 1 m length and 1 m^ area of cross section
samira28: Hope you understood
AduAnu: Wow!
Answered by Anonymous
13

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♠ What is Resistivity ??

♥Electrical resistivity is a fundamental property of a material that quantifies how strongly that material opposes the flow of electric current.

♠ Units of Resistivity

♥ The SI unit of electrical resistivity is the ohm⋅metre (Ω⋅m). It is commonly represented by the Greek letter ρ, rho.

♠ Formula of Resistivity

♥ ρ = R × A/l

where,

ρ = Resistivity of that material

R = Resistance of the material

A = Area of cross section for which its to be calculated

l = length for which it is to be calculated

♠ Factors on which Resistivity depends

♥  The resistivity of a material depends on its nature and the temperature of the conductor, but not on its shape and size. 

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