Q. The resistivity of alloys $= R_{alloy};$ the resistivity of constituent metals $R_{metal}.$ Then, usually
A) $R_{alloy} = R_{metal}$
B) $R_{alloy} < R_{metal}$
C) There is no simple relation between $R_{alloy}\ and\ R_{metal}$
D) $R_{alloy} > R_{metal}$
Explanation
The correct answer is Option D: $R_{alloy} > R_{metal}$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.