Consider two copper wires One has twice the length of the ot

Consider two copper wires. One has twice the length of the other. How do the resistivities of these two wires compare? A) The longer wire has twice the resistivity of the shorter wire B) The longer wire has four times the resistivity of the shorter wire. C) Both wires have the same resistivity. D) The shorter wire has twice the resistivity of the longer wire.

Solution

Resistivity of a material is its intrinsic property and its does not depends upon legth, width and onther physical paramters. Only resistance depand aon l and b.