So this equation basically summarizes what we just said. So this equation describes the relationship between the resistance as well as the length, the area and our resistivity. So the resistance of the wire is equal to the product of our resistivity row multiplied by L, the length divided by a it's cross sectional area. And from this equation, we see that if we increase the length, we increase the numerator, and so we increase our resistance. And because the resistance is high, that means the velocity will be low. On the other hand, if we increase the area, the denominator will increase, and that will decrease the resistance.