Question

Resistivities of copper,constantan and silver are 1.7×10^-8ohmm,39.1×10^-8ohmm and 1.6×10^-8 ohmm respectively.Which has the best conductivity?

Answer 1

1.6*10^-8 is smallest. So silver is best

Answer 2

Siler has the best conductivity among the three.

• The resistivity of silver is given as 1.6×10⁻⁸ Ω which is the least among all. The resistivity of copper and constantan is 1.7×10⁻⁸ Ω and 39.1×10⁻⁸ Ω.
• Now, the conductivity of a material is inversely proportional to the resistivity of the material, which means the lesser the resistivity of the material more will be its conductivity. So, silver will have the best conductivity as it has the least resistivity.

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