2006-08-02 01:20:15 · 3 answers · asked by m.1355 1 in Science & Mathematics ➔ Chemistry
Copper quickly developes a resistive oxide coating in air, so copper contacts must be coated with gold or tin to make a good low resistance connection.
2006-08-02 01:41:21 · answer #1 · answered by rscanner 6 · 0⤊ 0⤋
I guess we would all be dead from electrocution if copper was to be left bare without coating. Thus Non-conductible flexible materials have been very useful coating materials.
2006-08-02 01:56:27 · answer #2 · answered by Logoligi 2 · 0⤊ 0⤋
as we all know... copper is a metal. metals are good conductor of heat and electricity. in an electrical equipment , copper conducts electricity from one point to another. non-metals are used as coating for copper since non-metals are good insulators of electricity.
2006-08-02 01:38:57 · answer #3 · answered by ma_jo26 1 · 0⤊ 0⤋