Question

A wire of length 2m and another wire of length 5m are made up of the same material and have the same area of cross section, which wire has higher resistance?

(a) Both have equal resistance

(b) The 2m wire has higher resistance

(c) The 5m wire has higher resistance

(d) The value of resistance cannot be determined from the given data

Answer 1

The correct choice is (c) The 5m wire has higher resistance

To explain I would say: Resistance is directly proportional to the length of the wire, hence as the length of the wire increases, resistance increases.