Question

the electrical resistivity of a Copper and Aluminium are 1.6 2 into 10 ki power minus 8 ohm metre and 20 2.63 into 10 ki power minus 8 M respectively which is better conductor why​

Answer 1

Answer:  aluminium

Explanation:

R=rho*l/a

which says that,  R is proportional to resistivity.

so when r is high then rho is also hihly resistive

in this case aluminium have more resistivity so it is the answer

Answer 2

Answer: copper

Explanation:

Copper is better conducter

As resistivity opposes the flow of current and resistivity of aluminum is more therefore copper is conducter as it allows current to flow