Question

what are the factor affecting resistance of conductor?

Answer 1

The resistance of a conductor depends on various factors like length of the conductor, Resistivity of the material and cross sectional area. The equation is here

R = pL/A

where R = Resistance

p= Resistivity

L= length of the conductor

A = cross sectional area

The resistance also depends on temperature also.





I think now you can understand it very well

Answer 2

QuestioN :

What are the factor affecting resistance of conductor ?

AnsweR :

Resistance : Resistance of a conductor means the obstruction to the flow of electrons though a conductor. SI unit of Resistance is Ω (Ohm). It's dimensional formula is $\sf{[ML^2 T^{-3} A^{-2}]}$ .

The factors on which the resistance depends are :

$\large{\boxed{\rm{R \: = \: \rho \dfrac{l}{A}}}}$

Where,

• ρ is resistivity which is a constant
• l is length of the conductor or wire
• A is area of cross section of conductor or wire

Resistance is Directly proportional to the length of the conductor and inversely proportional to the Area of conductor. i,e., if we will increase length then Resistance will increase and if we will increase the area of cross section, resistance will be decreased. And after removing the proportionality symbol here comes a constant known as resistivity.

$\longrightarrow \sf{R \: \propto \: \dfrac{l}{A}} \\ \\ \longrightarrow \sf{R \: = \: \rho \dfrac{l}{A}}$