Materials and Components
The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as

Debye rule
Matthiessen’s rule
Onne’s rule
Curie rule

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

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

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