The electrical conductivity of copper and nickel material at room temperature are 6.0×107 (??m)-1 and 2.0×107 (??m)-1 , respectively. Copper and nickel form a solid solution at low concentrations at room temperature. If an alloy of nickel plus 5 atom % copper produced from these materials has an electrical resistivity of 11×10-8 ??m, what would be the electrical resistivity of an alloy of nickel plus 10-atomicpercent copper? You may assume that these are dilute solutions.
What will be an ideal response?
Since both 5 and 10 atom % nickel can be substituted into a copper crystal, the nickel
atoms in the copper add additional scattering centers for the electrons. The equation for the resistivity of a dilute solid solution is
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