Use the data in Table 12.2 (in NCERT Book on Page No. 207) to answer the following :
(i) Which among iron and mercury is a better conductor ?

(ii) Which material is the best conductor ?

(i) Resistivity of iron = \(10.0 \)x \(10^{-8} \Omega m \)
Resistivity of mercury =\( 94.0\) x \(10^{-8} \Omega m \).

Therefore, iron is a better conductor because it has lower resistivity than mercury.

(ii) silver has the lowest resistivity (\(1.60 \) x \(10^{-8} \Omega m\)), therefore silver is the best conductor.