Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.527Ω. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 x 10-8 Ω·m, and that of aluminum to be 2.82 x 10-8 Ω·m.
1 answer
R = (1.72*10^-80/2.82*10^-8) * 0.527 Ohms = 0.321 Ohms.
2 answers