Assertion : When a wire of resistivity X is pulled to double its length ,its resistivity remains the same.
Reason : Resistivity depends on the nature of material.
a) both A and R are true and R is the correct explanation of A .
b) both A and R are correct and R is not the correct explanation of A .
c) A is true but R is false.
d) A is false but R is true.
Reason : Resistivity depends on the nature of material.
a) both A and R are true and R is the correct explanation of A .
b) both A and R are correct and R is not the correct explanation of A .
c) A is true but R is false.
d) A is false but R is true.
Answers & Comments
Answer:
a) both A and R are true and R is the correct explanation of A .
Explanation:
Resistivity depends on the material used not on the shape, size of the body so resistivity is remained same .
Explanation:
a) both A and R are true and R is the correct explanation of A .