Question

Factors on which the Specific Resistance of a wire depends ?

Answer 1

Hint:The electric resistance of a circuit component or device is defined because the ratio of the voltage applied to the electrical current which flows through it: $R = \dfrac{V}{I}$.

Complete step by step answer:
The Specific resistance of a wire depends on the temperature and on the fabric that's utilized in the wire. Specific resistance is also well defined because of the resistance that is offered per unit length and unit cross-sectional area when a voltage of known value is applied.

The resistivity or specific resistance of a cloth is an intensive property and depends only on material and temperature.Specific resistance of a wire is an intrinsic property of the fabric of wire, so it depends only on the fabric of the wire but not on the size of the wire.The resistivity is additionally referred to as specific resistance.

The resistivity represents the resistance of the fabric which has specific dimensions, i.e, the fabric has 1-meter length and 1 square metre area of cross section. The SI unit of resistivity is ohm meter. Resistance is that the opposition to the flow of charges during a conductor. Therefore, resistivity is adequate to the resistance of the conductor with a unit cross-sectional area and unit length.

Note: The precise resistance or resistivity of a wire is the property of the fabric of it.It doesn't depend upon mass, length or cross-section of wire. The SI unit of specific resistance is Ohm-m.