Question

the resistivity of a wire does not change if a) the material is changed b) the object is changed c) the shape of the wire is changed d) both material and temperature is changed ​

Answer 1

Answer :- a) it may change .

B)??????????

C) the resistivity changes if the diameter of the wire is increased.

D) TEMPERATURE may affect .....

Explanation:

Answer 2

The resistivity of wire does not change if c) the shape of the wire is changed

•Resistivity is the measure of resistance to the electrical conductance in the material.

•The resistivity of a material is dependent on the nature of the material and temperature.

•Resistance depends on the area, temperature, material and length of the conductor.

•Resistivity is a property of the material, therefore changes with the change in material.

•Formula for resistivity is -

R = resistance*length/cross sectional area.