What happens to resistance if the length of a conductor increases?

When the length of a conductor increases, its resistance also increases. This relationship is governed by Ohm's Law and the fundamental properties of conductors. Resistance is directly proportional to the length of the conductor; as the length increases, there is more material for electric current to pass through, leading to an increase in collisions between the charge carriers (typically electrons) and the atoms in the conductor.

This increased interaction causes a greater overall opposition to the flow of electric current, resulting in higher resistance. The specific increase in resistance can be calculated using the formula ( R = \rho \frac{L}{A} ), where ( R ) is the resistance, ( \rho ) is the resistivity of the material, ( L ) is the length of the conductor, and ( A ) is the cross-sectional area. Thus, as you increase ( L ), ( R ) increases proportionately, confirming that the correct response is that resistance increases with an increase in length.