Question

a wire of resistivity 'r' is pulled to double it's length. what will be its new resistivity ?​

Answer 1

Answer:

Explanation:

Resistivity never changes by lenght or breadth.........

Answer 2

hey mate!

here is your answer:

Let old resistance be R and new be R1

R is directly proportional to length.

If length doubles , the resistance also doubles .So, the R1 is the double of R

hope it helped ^_^