Question

A wire of resistivity $\rho$ is stretched to double its length. How does it affect the resistivity?

• A. Resistivity will remain same
• B. Resistivity will get doubled
• C. Resistivity will be four times
• D. Resistivity will be halved

Answer 1

The correct option is A Resistivity will remain same

Resistivity is a property of a material that does not depend on the dimensions of the conductor but varies with temperature. Thus resistivity will remain the same even if the length of the wire is doubled.