Practicing Success
The resistivity of a potentiometer wire is $10^{-7} \Omega m$ and its cross-section area is $10^{-6} m^2$. When a current of 0.1 A flows through the wire, its potential gradient is: |
$10^{-1} V/m$ $10^{-2} V/m$ $10^{-4} V/m$ $10 V/m$ |
$10^{-2} V/m$ |
The correct answer is Option (2) → $10^{-2} V/m$ |