Question

If a wire of resistivity $\left(\rho \right)$ is stretched to thrice its initial length, what will be its new resistivity?

Answer 1

• Resistivity is an intrinsic property of the material that measures how strongly a material opposes a flow of current through it.
• It depends on the nature of the material and the temperature of the material.
• It is independent of the physical dimensions of the material.
• Therefore, when the wire is stretched to thrice its original length, the resistivity remains the same.

Final answer: New resistivity will be the same as the initial resistivity.