Q. If the resistivity of an alloy of $\rho ’$ and that of constituent metals is $\rho$, then
A) $\rho' > \rho$
B) $\rho' < \rho$
C) $\rho^{'} = \rho$
D) There is no simple relation between $\rho$ and $\rho ’$
Explanation
(a) The resistivity of metal increases when it is converted into an alloy
$\rho' > \rho$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.