Hi! The question is simple, seemingly... Doubling the length of a wire, doubles the resistance of the wire... Why? There is one interesting point to it: Doubling the length of the wire also makes the ELECTRIC FIELD weaker TWO times. That automatically makes the current smaller two times.... We know that making the resistance bigger 2 times, makes the current smaller 2 times. I see a parallel here! It seems that resistance is NOT necessarily a property of the matter itself, rather it is the combination of factors that make the current smaller than it would be if there were no such factor present (e.g making the wire longer). So it seems to me that the "resistive factor" here is the weakening of the electric field... Any opinions? Kind regards!