i believe mostly in contact points, connections
Even though silver is the best conductor of electricity, it is extremely expensive. Thus silver is not used to make electical wires. Silver is also very soft to be used as electric wires.
Conduit Bodies are usually grey or silver in color. They are made of metal, fiber, plastic or fixed clay. It is an electrical tubing used for protection and routing of electrical wiring.
Copper is a reddish brown element used for electrical wiring as it is a good conductor of electricity.
The most commonly used wiring method for residential use is called nonmetallic sheathed cable. Other types of wiring methods are knob and tube, as well as service entrance cable.
Steel.
Coins are not usually silver these days. Since the 1960s they have been made of copper and nickel. Silver coins from before 1965 in the US were 90% silver. Foreign countries have used anything from 40% to 92.5% silver in their coins, but to my knowledge, no one has used pure (100%) silver in currency.
Foreign coins usually cannot be used in other countries. You can cash in foreign coins, but you usually only get a fraction of the value when you do.
For most applications ... where the wire has no function other than to join the components that accomplish the purpose of the circuit ... the best metal to use for wiring would be the one with the smallest resistivity. That would be silver. A big part of the reason that we usually settle for copper is because it is only second best as a conductor and is a lot less expensive than silver.
The cost factor. Other than that it is an excellent conductor.
aluminum
For making cheese and drinking.
For wiring, we only use copper and silver. The most common conductor is copper. Almost all wires use copper as a conductor.
foreign affairs
Silver is, then copper, then gold, and then aluminum. Copper is used for wiring because it is cheaper than silver. Aluminum is not used very much anymore because it can be dangerous when installed improperly.
Abroad is defined as being in a foreign country. When used as a noun it means all foreign countries. When used as an adverb it can means overseas or outdoors.
ambassadors ministers consuls
outsourcing to foreign countries