Question

Two wires of equal length, one made of aluminium and other of copper, have same

resistance. Which will be thicker? Explain.​

Answer 1

Answer:

Two wires have same length and the resistance . as the specific resistance or resistivity of resistance are unequal , the areas are different.

we know formula,  

for copper wire,  

for aluminum wire,  

because  

so,

we also know, density = mass/volume

mass = density × volume

mass = density × base area × length

so,  

Here it is clear that  ,

thus, the aluminum with for the same resistance is very light than copper and that is why aluminum wire are preferred for overhead power cable.

Answer 2

Explanation:

it shows that copper wire is 2.16 times heavier than alluminium wire. since for the same value and the lenght and resistance, aluminium wire has lesser than the copper wire...

therefore aluminium wire is preferred for

overhead power cables...

please mark me as brainlist