There are several metals able to be stretched into wire. In electrical wiring, copper or copper coated aluminium is commonly used. Steel is also able to be stretched into wire.
It is "ductile".
Elastic potential energy (EPE) is stored in a stretched wire because when it is stretched it has the potential to bounce back with kinetic energy and because energy cannot be created or destroyed (conservation of energy) this energy must start from somewhere and that is EPE.
An ounce of gold can be stretched into a wire 80km (50miles) long or beaten into a sheet covering 9 square metres.
Ductility
the resistivity will increase by nine times
Apparently not. They don't drop to the ground dead while sitting on the wire, but are able to primp, preen, look around, and leave the wire when they feel like it.
a material that can be stretched into a wire
yes
Malleable means it can be hammered into a thin sheet. Ductile means it can be stretched into a wire.
Young's modulus
Ductility refers to the ability of a metal to be drawn into a wire.
A piece of wire stretched such that its length increases and its radius decreases will tend to have its resistance increase. The formula for this is: R = ρL/A where ρ = resistivity of the material composing the wire, L = length of the wire, and A = area of the conducting cross section of the wire. It can easily be seen that as area decreases resistance gets higher. In the case proposed the wire length is not reduced as it is stretched to reduce the area, this increases the resistivity as well.
Elastic potential energy (EPE) is stored in a stretched wire because when it is stretched it has the potential to bounce back with kinetic energy and because energy cannot be created or destroyed (conservation of energy) this energy must start from somewhere and that is EPE.
One that is able to be stretched
One way in in a rolling mill , another is when pulling wire.
Metal is ductile when it is capable of being stretched into a thin wire.
An ounce of gold can be stretched into a wire 80km (50miles) long or beaten into a sheet covering 9 square metres.
ductile, meaning that it can be deformed without breaking and can be stretched into a thin wire shape. This property is the result of the metallic bonds between atoms in the metal, which allow for the movement of atoms without causing structural failure.