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There are a number of reasons:
If the wire is electrical then it is covered in plastic as plastic provides insulation, this means that if adjoining wires come into contact the electrical current would not cause a short circuit. Normally electrical wire is cooper as it is a good conductor of electricity and does not oxidize/ rust easily.
Secondly wire hangers are covered in plastic to prevent the metal (normally mild steel) from rusting. If they were to rust, it would cause orange/ red stains on your clothes.
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What is an arrow for archery made of?
usually plastic, sometimes metal or have rubber coating
What finishes can be applied to metal?
- coating with another metal - paint coating - plastic coating
What is plastic coating?
It is a coating put on metal that makes it look like plastic. It can be used for other stuff as well. like mouse cords for your computer
What is a hair grip made of?
Hair grips can be made with either plastic or metal. Some of them have plastic coating over the top of the metal.
Why does the charge flow through the copper wire but not the plastic coating that covers it?
Because plastic is Not Metal and the penny is.
What metal is used in household electric wiring?
Yes, because to conduct electricity you need a metal wire, (usually copper). However they have a plastic outer coating (sheath) which protects them and insulates them.
What Is a flat round portable metal disc with a plastic coating?
optical dish
What metal is a bobby pin made out of?
Steel. (Usually has a coating, but the metal is steel)
What are the uses of plastic powder coating?
Pretty much the same as any other metal finish.
What is galvinisation?
This is the coating of METAL (USUALLY STEEL) with ZINC It can be applied in several ways.
Why is there usually a metal coating around a metal wire?
There are a number of reasons: If the wire is electrical then it is covered in plastic as plastic provides insulation, this means that if adjoining wires come into contact the electrical current would not cause a short circuit. Normally electrical wire is cooper as it is a good conductor of electricity and does not oxidize/ rust easily. Secondly wire hangers are covered in plastic to prevent the metal (normally mild steel) from rusting. If they were to rust, it would cause orange/ red stains on your clothes.
What is in bobby pins?
Usually made out of Metal or Plastic.
