Question

why doesn't the resistance of a conductor depend on voltage and current, even though, by Ohm's law, we know; V=IR?​

Answer 1

Answer:

Current

Explanation:

Answer- current

Resistance is just a constant that is used to remove the sign of proportionality

Answer 2

Explanation:

Because resistance of a conductor is always fixed. It can neither be changed by current (I) nor by voltage (V). From the given formula,

R = ρl/A

where, R = resistence;

l = length;

A = Area of cross section of conductor;

ρ = resistivity of conductor;

it can deduced that R can't be affected by any of the parameter (i.e. voltage and current).

As a case in point, resistance of copper wire(which is a conductor) of 1km length and 1 mm radius of its cross section is 5.48Ω.

This resistance will always be same for 1km long copper wire of 1mm radius of cross section.

That's all.