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?
Text Solution
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(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.
Use the data in Table 3.1 to answer the following : (a) Which among iron and mercury is a better conductor ? (b) Which material is the best conductor ?
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Which metal is the best conductor of electricity ?
The resistivity of three metals namely iron, silver and mercury are 10xx10^(-8) Omegam, 1.6xx10^(-8) Omega and 94xx10^(-8) Omega m respectively. Answer the following using given data (a) Which among iron, silver and mercury is the best conductor ? (b) If the length of the iron conductor is doubled, what will happen to its resistivity ? Given reason for your answers.
