Hey I am doing a project on resistance.it is called to investage the relationship between the length of a metallic conductor and its resistance.could I please get any information on this as possible.. tanks

Well I could tell you the relationship, but that would be no fun.

What you need to do is get lots of different lengths of the same wire (material and crosssectional area) and measure the resistance.

You could try it with something other than wire too, I bet you have access to some different length metal rods and things too, those are worth a try too.

Once you have a data set, then you can move onto finding the relationship.