Question

define resistivity........

Answer 1

$\huge\bf{Hey\:Mate}$

Resistance offered by a conductor of length 1 metre and area of cross-section 1 sq.metre is called as resistivity of that conductor.

Hope it helps uh❤️

Answer 2

Answer :

Resistivity :-

It is defined as the resistance offered by a cube of a material of side 1m when current flows perpendicular to its opposite faces.

• Its SI unit is ohm-metre (Ωm).

• Resistivity does not change with change in length or area of cross - section but it changes with change in temperature.

• Range of resistivity of metals and alloys is 10^-8 to 10^-6 Ωm.

• Range of resistivity of insulators is 10¹² to 10^17 Ωm.

• Resistivity of alloy is generally is higher than that of its constituent metals.

• Copper and aluminium are used for electrical transmission lines as they have low resistivity.