Why are electrical wires made up of loads of tiny copper fibres instead of one fat copper wire?

Question

Title essentially. What advantage does having loads of fibres have over one solid piece? Flexibility?

In: Physics

Answer 1

You’ll see there are many types of wire. You’re referring to stranded wire. (See Under “Forms of wire” https://en.m.wikipedia.org/wiki/Wire).
In terms of mechanical properties stranded wire is more flexible and pliable making it easier to handle. It’s not so rigid. In terms of electrical properties it seems to be better for high frequencies