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What factor(s) on which resistivity of materials depends?

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On the nature of the material

On the temperature of the material

Both options 1 and 2

None of above

answer is C.

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Detailed Solution

The factors on which resistivity of materials depends
● on the nature of the material and
● the temperature of the material.
The resistivity of a material depends on the nature of the material and its temperature.
Nature of the material:
"Resistivity is a property that describes the extent to which a material opposes the flow of electric current through it."
Any change in shape, size or length will not impact the material's resistivity.
Temperature: If a metal conductor's temperature rises, the conductor's ions vibrate more vigorously. This vigorous vibration increases the number of collisions between the free electrons and the ions. Hence, for a metal, resistance increases with increasing temperature.

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