Question

Two wires a and b of the same material and having same length

Answer 1

but resistivityy varies...

Answer 2

Seems like your question is incomplete.

Here is the complete question.

Question :- Two wires A and B are formed from the same material with same mass. Diameter of wire A is half of diameter of wire B. If the resistance of wire A is 32 ohm. Find the resistance of wire B.

Solution is given below.