He matū e māmā ai te rere o te iahiko i roto, arā, he iti noa iho te parenga iahiko. He pai te nuinga o ngā konganuku hei pūkawe hiko, pērā i te konukura (Cu) me te konutea (Zn).
A material that allows electric current to flow through it easily with little resistance. Most metals are good conductors, for example copper (Cu) and zinc (Zn).