Usually above 99%.
Copper stays where you put it much better than saline water does.
Copper is a much better electrical conductor than iron.
I think copper is cheaper.
we use copper in wires because it is a conductor of both heat and electricity
Electrical wires are made from copper, as copper is a good conductor of electricity.
Silver would be too expensive. Copper is much cheaper.
If you mean 2 bare copper wires those are the ground wires. Tie them together and then connect the light fixture ground wire which will be green or bare copper to those ground wires.
Copper is much more abundant in the Earth's crust than gold is. It's also easier to mine.
no its light. its in wires and those are light. i scrap wires for the copper to sell. i would know
Copper has been used lately in wires and cables like coaxial and electric wires.
Copper. Copper is an excellent conductor.
Copper, although it is not 100 % pure, it is still copper. for larger cables you can still get aluminum, but it is much more brittle and you can only work with it so much till it becomes weak. They also used a lot of aluminum in huses for a short period of time, but now they are back to copper.