Consider two wires, A and B, of same thickness but lengths L and 4L, respectively. If the resistances of A and B are 0.5 Ω and 2.0 Ω , respectively, the ratio of the resistivity of A to the resistivity of B is:
1
\(\frac{1}{2}\)
2
\(\frac{1}{4}\)
3
1
4
4