Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity $\rho$C, $\rho$T, $\rho$M and $\rho$A respectively. Then :
Solution
ρ<sub>M</sub> = 98 × 10<sup>–8</sup>
<br>ρ<sub>A</sub> = 2.80 × 10<sup>–8</sup>
<br>ρ<sub>C</sub> = 1.72 × 10<sup>–8</sup>
<br>ρ<sub>T</sub> = 5.65 × 10<sup>–8</sup>
<br><br>$\therefore$ $\rho$<sub>M</sub> > $\rho$<sub>T</sub> > $\rho$<sub>A</sub> > $\rho$<sub>C</sub>
About this question
Subject: Physics · Chapter: Current Electricity · Topic: Ohm's Law and Resistance
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