Resístanse:
Nichrome resists more the current tan copper. Nichrome has a bigger resistance than copper.
Every material has an electrical resistance. The greater the material´s resistance, the smaller is the current which through it.
Conductors like copper and aluminum have very low resistances. They carry large currents well but insulators have very large resistances. They only allow small currents to flow through them.
When the current flows through a wire, electrical energy is changed to heat energy.
When a current is pushed through a high resistance wire by a large voltage large amounts of heat are produced