Question

two wires of same material have length L and 2L. Compare their resistance and resistivity

Answer 1

heya friend!!☺☺
here's your answer!!☺☺

Two wires of same material are having length L and 2L. Compare their resistance and resistivity

As the materials are same of the wires they will have the same resistivity ρ. Let resistance of the wire of length L and 2L be R1 and R2 respectively. A be the CSA of the wires.

We have R1 = ρL/A

R2 = ρ(2L)/A = 2(ρL/A)

=> R2 = 2R1



Thus, resistance of the 2nd wire is twice than that of the first

hope it helps you!!☺☺