Intext questions IX — task. Science CBSE, Class 10.

PDF chapter test TRY NOW

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.

Did you find an error?

41. Intext questions IX