Consider two copper wires with the same cross-sectional area. wire a is twice as long as wire b. how do the resistivities and resistances of the two wires compare?

check all that apply.
a. wire b has twice the resistance of wire a. wire b has twice the resistivity of wire a.
b. wire a has twice the resistance of wire b. wire a and wire b have the same resistivity.
c. wire a and wire b have the same resistance.
d. wire a has twice the resistivity of wire b.

Wire A has wire resistance as wire B and both wire have resistivity

So option is B is correct answer                  

Explanation:

We have given that wire A has twice the length as of wire B

And area of cross section is same so

We know that resistance is given by

So and

From the resistance expression we can see that resistance is directly proportional to length

As

So resistance of wire A is twice the resistance of wire B

And as both the wire is made up of copper so resitivity will be same

So option B will be correct option

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