Question

the resistance of a wire is 'R' and it's 'P'. what will be it's resistance and resistivity if it's length increases by two times and area decreases by two times ??​

Answer 1

Answer:

• Here comes a proportionality constant called resistivity which only depends on temperature and the nature of material. So if the length of a wire is increased 2 times then its resistance also increases 2 times but its resistivity remains constant as the temperature is constant and the material is same.

Answer 2

Answer:

Here comes a proportionality constant called resistivity which only depends on temperature and the nature of material. So if the length of a wire is increased 2 times then its resistance also increases 2 times but its resistivity remains constant as the temperature is constant and the material is same.