Question

Медный и алюминиевый проводники имеют одинаковые массы и сопротивления. Какой проводник длиннее и во сколько раз?

Answer 1

Известно, что сопротивление проводника пропорционально 
удельному сопротивлению ρ и длине l  и обратнопропорционально площади сечения S 
Медь = 0,0172 
Алюминий = 0,0271 
проводник из меди длиннее проводника из алюминия в 0,0271 / 0,0172 = 1,58 раз

Answer 2

Comparing Copper and Aluminum Conductors

When comparing copper and aluminum conductors with the same mass and resistance, the length of the conductors and the ratio of their lengths can be calculated using the following information:

Mass and Resistance: - Both copper and aluminum conductors have the same mass and resistance. - The resistance of a conductor is given by the formula: R = ρ * (L/A), where R is the resistance, ρ is the resistivity, L is the length, and A is the cross-sectional area.

Length and Ratio Calculation: - The length of the conductors and the ratio of their lengths can be calculated using the resistivity and the resistance of the materials.

Based on the provided information, the length of the aluminum conductor would be longer than the copper conductor, and the ratio of their lengths can be calculated using the resistivity and resistance of the materials.

If you need further assistance with specific calculations or additional information, feel free to ask!