PVC is an insulator, so wires are coated with it to keep us from getting electric shocks. Electric wires are made of metals that conduct electricity, such as copper, but they are coated with rubber. As a result, it’s an excellent material for electrical applications like cable insulation sheathing.
Why is PVC used to coat wires?
Cable with a PVC insulation or sheathing is flame retardant, which is an important consideration for electric cables in most applications. PVC can be made resistant to a wide range of chemicals including oils, acids and alkalis, and is tough, durable and resistant to abrasion.
Why electric wires are coated with?
Electric wires are made up of materials like copper, that conduct electricity well. While dealing with the wires we can get electric shock. To prevent this, the wires are coated with material like Plastic, which do not conduct electricity.
Why Rubber is not used to make electric wires?
Answer: Materials that do not allow electricity to pass easily through them are called insulators. Rubber, glass, plastic, and cloth are poor conductors of electricity. This is why electrical wires are covered in rubber, plastic, or cloth.
Is prevented by coating the conducting wire with PVC?
Detailed Solution. Short-circuit is prevented by coating the conducting wire with pvc. PVC is an insulating substance. It does not allow electric current to pass through it.
Why are electric wires coated with such substances class 10th?
Electric wires are made up of materials like copper that are good conductors of electricity. To get rid of this conduction of electricity from these wires and cables, they are coated with insulating materials like PVC (Polymer) .
Which of the following presents the best explanation as to why electrical wires are usually coated with plastic?
Electrical wiring is usually covered with layer of plastic to make it safe. As we know that plastic is an electrical insulator and it is readily available and cheap. So as to insulate the electricity carrying wire, to make it shock free. It is covered with layer of plastic.
Why is it that conductor materials like copper made into wires being covered with rubber or plastic?
Copper wires are usually covered with rubber or plastics to prevent shocks and ensure safety. Because plastics and rubbers are insulators of electricity i.e. they cannot conduct electricity.
Is rubber a good conductor of electricity?
Metals are generally very good conductors, meaning they let current flow easily. Materials that do not let current flow easily are called insulators. Most nonmetal materials such as plastic, wood and rubber are insulators. … Electricity requires a complete “loop” for current to flow.
Can a rubber cord be used in place of wire?
P.V.C. insulated flexible cord is presently used largely in place of rubber-insulated cord. It may be directly applied over the conductor of each wire and does not affect the copper or aluminium conductors of the wires.
Why are electric wires made of copper?
Why is copper used for most electrical wiring? … The lower the level of resistivity, the more electrical conductivity a metal has. Copper has low resistivity, and therefore is an excellent conductor. Copper is also less oxidative than other metals.
Which metal is the best conductor of electricity?
“Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons). For a material to be a good conductor, the electricity passed through it must be able to move the electrons; the more free electrons in a metal, the greater its conductivity.