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Question:

How can aluminum be conductive without being magnetic?

From understanding the electrical process on an atomic level, to conduct electricity the free electrons must be aligned north/south magneticallyEasily done with ferrous metals but aluminum isn't ferrous so the free electrons don't align as they would in say copper wiringI KNOW aluminum wire is used in aircraft for weight considerationDoes it require more potential difference to produce the same energy as copper would? How does this work, any information is helpful.Thanks

Answer:

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Electrical conductivity has nothing to do with magnetism Electrons need not be aligned with anything to conduct currentNeither Al wire not Cu wire produce energy, that is not possibleBut you are correct re aircraftAluminum wire does have more resistance than copper, and therefore will have a bigger voltage dropBUT that is for an Aluminum wire that is the same size (diameter) as a copper wireIf you consider an Al wire that is the same weight as a given Cu wire, than the Al wire has a lower resistance, by a factor of 3OR, for the same resistance, the Al wire would be thicker but lighter, and weight is important in aircraft .

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