Question

Two conductors are made of the same material and have the same length. Conductor A is a solid wire of diameter 1 m. Conductor B is a hollow tube of inside diameter 1 m and outside diameter 2 m. The ratio of their resistance, RA/RB, is:
A) 1
B)
C) 2
D) 3
E) 4

Answer

This answer is hidden. It contains 1 characters.