Question

Three wire of same length and same area of cross section have different value of resistances at constant temperature. this is because of special character of materials. The name of the physical quantity of character and unit is *

2 points

Physical quantity is conductivity and unit is ohm meter

Physical quantity is resistivity and unit is ohm celcius

Physical quantity is resistance and unit is volt meter

Physical quantity is specific resistance and unit is ohm meter

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Answer 1

physical quantity is specific resistivity and unit is ohm meter

specific resistivity is also the resistivity constant rho of a particular material.

it is nothing but the resistance offered by the material or conductor when the length and cross sectional area are of unit(1) value.