Question

# A wire of resistivity $$\displaystyle \rho$$ 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

Solution

## The correct option is A Resistivity will remain sameResistivity 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.Physics

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