Materials and Components
The residual resistivity of a binary alloy at 0 K is

Dependent on the concentration of minor component in the alloy
Sum of residual resistivities of component metals
Difference of residual resistivities of component metals
Product of residual resistivities of component metals

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Materials and Components
With increase in temperature, the electrical conductivity would

Increase in metals but decrease in intrinsic semiconductor
Increase in metals as well as in intrinsic semiconductor
Decrease in metals but increase in intrinsic semiconductor
Decrease in metals as well as in intrinsic semiconductor

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Materials and Components
At room temperature the number of conducting electrons in an intrinsic semiconductor

Is about half the number of valence electrons
Is small as compared to the number of valence electrons
Is almost equal to the number of valence electrons
Is a very small fraction of the number of valence electrons

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