Suppose wire X and wire Y are made of different materials, and have different lengths and cross-sectional areas. What is the ratio of the resistance of wire X to the resistance of wire Y?
The length of wire X is one fifth the length of wire Y.
The radius of wire X is one third the radius of wire Y.
The resistivity of the material of wire X is half the resistivity of the material of wire
9:10
3:10
10:9
10:3
