given two cylinders of identical proportions and made of the same material. How does the resistance of the two cylinder compare if:
i) The length of one is three times the length of the other.
ii) The radius of one is ½ the radius of the other.
If you are now told that the material is copper and one cylinder has length 5 cms and radius 1mm, what is its resistance? You will have to locate the resistivity for copper and give me the reference source.