Practicing Success
Practicing Success
CUET Preparation Today
The resistivity of an iron wire is $10 \times 10^{-8} \Omega m$. The resistance of an iron wire is $5 \Omega$. If its length as well as thickness is doubled then its resistivity will be: |
$10 \times 10^{-8} \Omega m$ $20 \times 10^{-8} \Omega m$ $5 \times 10^{-8} \Omega m$ $40 \times 10^{-8} \Omega m$ |
$10 \times 10^{-8} \Omega m$ |
The correct answer is Option (1) → $10 \times 10^{-8} \Omega m$ |
