NCERT · Class 10 · Science · ElectricityList the factors on which the resistance of a cylindrical conductor depends.

The electrical resistance of a uniform cylindrical metallic conductor depends directly upon four primary physical factors. First, it depends directly on the length of the conductor, meaning longer wires possess higher resistance. Second, it depends inversely on the cross-sectional area of the conductor, meaning thicker wires offer lower resistance. Third, it depends significantly on the nature and material composition of the conductor, as different metals have different free electron densities. Fourth, it depends heavily on the surrounding temperature, since increasing temperature generally increases the resistance of pure metallic conductors due to increased thermal vibrations.