Consider two copper wires of equal cross-sectional area. One wire has 3 times the length of the other. How do the resistivities of these two wires compare?

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asked Sep 27, 2021 220k views

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Singing · Answer 1 · 2021-10-03T04:50:07+0000

Step-by-step explanation:

The relation between resistance and resistivity is given by :

$R=\rho (l)/(A)$

$\rho$ is resistivity of material

l is length of wire

A is area of cross section of wire

Resistivity of a material is the hidden property. If one wire has 3 times the length of the other, then it doesn't affect its resistivity. Hence, the resistivity of two wires is

Consider two copper wires of equal cross-sectional area. One wire has 3 times the length of the other. How do the resistivities of these two wires compare?

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