Why iron is not used to …
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Yogita Ingle 5 years, 2 months ago
The reasons for iron is not used in making electrical wires are as follows:
1. Iron is very brittle in nature.
2. It gets corroded when comes in contact with oxygen in nature.
3. The resistivity of iron is large. Iron also has 5 1/2 times more resistance than the same size copper wire, so it will get 5 1/2 times hotter, and have 5 1/2 times more voltage losses, when carrying the same current as the copper wire.
4. Used as wire conductor will cause a lot of power waste, this will reduce the voltage of the power supply system, resulting in electrical appliances do not work .
5. Compared with copper and aluminum, the iron is unstable and easily oxidized. After oxide (rust), its resistance is further increased, and it is easy to cause damage.
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