Question

What is the range of resistivity in metals which are conductor of electricity?

(a) 10-8

to 10-7 Ωm (b) 10-7

to 10-6 Ωm

(c) 10 8

to 10-6 Qm (d) 10 8

to 10 4 Qm​

Answer 1

Explanation:

The typical range of resistivity for metals is from 10−8Ωm to 10−6Ωm.

Answer 2

Range of resistivity in metals is 10-⁸ to 10-⁶ Ωm. (option c)

• Resistivity is the obstruction the the flow of current. It is defined as the resistance of a substance with unit length and area of cross section.
• The resistivity of metals lies within the limit 10-⁸ to 10-⁶ Ωm. This changes with temperature. As temperature decreases, the resistivity of the metal also decreases.
• Some metals even become superconductors when they are cooled to below the critical temperature. They have zero resistance to current.