Question

Material A and B have resistivity 2.2 x 10​-8​ and 10 x 10​8​ Ωm than nature of A and B are Material A and B have resistivity 2.2 x 10​-8​ and 10 x 10​8​ Ωm than nature of A and B are

Answer 1

a is metal and b is insulator

Answer 2

Dear Student,

◆ Answer -

Material A => Conductor

Material B => Insulator

● Explanation -

As we know resistivity is inversely proportional to conductivity.

Materials having low resistivity are conductors. Hence, material A (with resistivity 2.2x10^-8 Ωm) is a good conductor of electricity.

Materials having high resistivity are insulators. Hence, material B (with resistivity 10x10^8 Ωm) is a bad conductor of electricity.

Thanks dear. Hope this helps you...