An inner core of copper wire, wrapped in various insulators.
A thin and long wire made of a material with high resistivity, such as nichrome or tungsten, would have the greatest electrical resistance.
Electrical energy. The whole purpose of power lines is to transfer energy from one place to another, in the form of an electrical current.
Most wires are made of copper or aluminum due to their high conductivity. The conductive metal is typically surrounded by an insulating material such as plastic or rubber to protect against electrical interference and prevent short circuits.
trainers are made from leather and silk
Phosphor is the material that lines the tubes of fluorescent lights and glows when exposed to UV light. This material emits visible light when excited by ultraviolet radiation.
copper and silver
Wood
The class of materials that make up transistors is "semiconductor." A transistor is often made from very pure silicon that is doped with germanium or other dopant to change its electrical properties.
leather is the most durable material for a handbag.
A sumo ring is made out of a special kind of clay.
It is made up of anything that someone throws away.
It is made of stainless steel.