plzzzzz answer this scientist-in-the-making's question?

Question

resistivity=Resistance*area of cross section/length of the conductor
so why is my textbook(concise physics for class 10,ICSE) giving this sentence that RESISTIVITY IS INDEPENDENT OF THE SHAPE AND SIZE OF THE CONDUCTOR
IS THIS STATEMENT CORRECT?
IF YES,THEN PLEASE GIVE ME THE REASON

Answer 1

YES the statement is correct.
It is because resistivity is a characteristic of the electrical properties of a conductive material. It is not dependent on the specific shape of what you are looking at. It is the resulting resistance that changes when you have a specific cross section and size of that material.

To be able to think about that property consider the equivalent in mass (its density). That is independent of shape. When you have a big piece of something then its density x volume adds up to a big mass. If you have a small piece of something then its density x volume adds up to a small mass. In both pieces the density was the same but the piece determined the total mass.

Then when you think of resistivity for a given material think of the cross section of the piece that you have and how wide it is. They both change the total resistance but do not change the material's inherent property.

Answer 2

IF you are a "scientist-in-the- making",why can't you solve it?

Answer 3

no it is not correct..... so i dont have to give you a reason huh? phewwwwwwwww!!!!!