Question

On what factors does the resistance of a conductor depends? Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?

Answer 1

The resistance of the conductor depends on the following factors: 

I. The temperature of the conductor, 

II. The cross- sectional area of the conductor, 

III. Length of the conductor 

IV. Nature of the material of the conductor 

The current will flow more easily through a thick wire than through a thin wire of the same material when connected to the same source. This is due to the fact that the resistance of a wire is inversely propositional to the square of its diameter. A thick wire has a greater diameter and hence lesser resistance making the current to flow through it more easily.