Because copper has a very low electrical resistivity of 16.78 nΩ·m, meaning it's easier for electricity to pass through it.
For comparison, nickel has a resistivity of 69.3 nΩ·m and iron's resistivity is 96.1 nΩ·m.
copper
Copper is almost always used in car wiring.
Copper is used for wiring!
Copper is commonly used in electric wiring and pennies due to its excellent conductivity.
Copper is the element used in wiring and pennies due to its high electrical conductivity and corrosion resistance.
Copper is more commonly used in electrical wiring than iron.
Copper is more commonly used in electrical wiring than iron.
copper
the wiring
copper
it is used to make wiring for your house.
copper is mainly used.