Answer:
(i) Among iron and
mercury, iron is better conductor of electricity because resistivity of iron
(10.0 x 10-8 m) is less
than that of mercury (94.0 X 10-8m).
(ii) We
know that a good conductor of electricity should have a low resistivity. Silver
has the lowest resistivity of 1.60 x 10-8 m, which means that
silver offers the least resistance to the flow of current through it. So,
silver is the best conductor of electricity.
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