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Use the data in table to answer the following –
Material's nature | Material | Resistivity of material (\(\Omega\ m\)) |
Conductors | Silver Copper Aluminium Tungsten Nickel Iron Chromium Mercury Manganese | \(1.60\times{10^{-8}}\) \(1.62\times{10^{-8}}\) \(2.63\times{10^{-8}}\) \(5.20\times{10^{-8}}\) \(6.84\times{10^{-8}}\) \(10.0\times{10^{-8}}\) \(12.9\times{10^{-8}}\) \(94.0\times{10^{-8}}\) \(1.84\times{10^{-6}}\) |
Alloys | Constantan Manganin Nichrome | \(49\times{10^{-6}}\) \(44\times{10^{-6}}\) \(100\times{10^{-6}}\) |
Insulators | Glass Hard rubber Ebonite Diamond Dry paper | \(10^{10}\) to \(10^{14}\) \(10^{13}\) to \(10^{16}\) \(10^{15}\) to \(10^{17}\) \(10^{12}\) to \(10^{13}\) \(10^{12}\) |
a. Which among iron and mercury is a better conductor?
The is the . Hence, iron is considered a better conductor than mercury.
b. Which material is the best conductor?
is the best conductor among all the other materials because its resistivity is \(\times{10^{-8}}\) which is among all the materials.
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