Use the data in Table on page 23 of this book to answer the following: (a) Which among iron and mercury is a better conductor? (b) Which material is the best conductor?

Use the data in Table on page 23 of this book to answer the following:

1.	Use the data in Table on page 23 of this book to answer the following: (a) Which among iron and mercury is a better conductor? (b) Which material is the best conductor?
Answer» Solution :(a) The electrical resistivity of iron is `10.0 xx 10^(-8) OMEGAM` WHEREAS that of mercury is `94.0 xx 10^(-8) Omegam`. Since the resistivity of iron is less than that of mercury, therefore, iron is a better conductor than mercury. (B) Silver metal has the LOWEST electrical resistivity (of `1.60 xx 10^(-8) Omega m)`, therefore, silver metal is the best conductor of electricity.