Use the data in the table given below and answer the following questions.

 Material Resistivity Conductors Silver 1.60 × 10–8 Copper 1.62 × 10–8 Aluminum 2.63 × 10–8 Tungsten 5.20 × 10–8 Nickel 6.84 × 10–8 Iron 10.0 × 10–8 Chromium 12.9 × 10–8 Mercury 94.0 × 10 –8 Manganese 1.84 × 10–6 Alloys Constantan 49 × 10–6 Manganin 44 × 10–6 Nichrome 100 × 10–6 Insulators Glass 1010 – 1014 Hard rubber 1013 – 1016 Ebonite 1015 – 1017 Diamond 1012 - 1013 Paper (dry) 1012

a. Which iron and mercury is a better conductor?

b. Which material is the best conductor?

Asked by Vishal kumar | 2 years ago |  191

##### Solution :-

a. Iron is a better conductor than mercury because the resistivity of mercury is more than the resistivity of iron.

b. Among all the materials listed in the table, silver is the best conductor because the resistivity of silver is lowest among all, i.e., 1.60 × 10–8

Answered by Vishal kumar | 2 years ago

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