Great Conductors and Insulators

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Diamond

Diamond is a form of carbon in which each carbon atom is joined to four other carbon atoms, forming a giant covalent structure. As a result, diamond is very hard and has a high melting point. ... It does not conduct electricity as there are no delocalised electrons in the structure.

Oil

Does oil conduct electricity? Answer: Yes hair oil conduct electricity.

Dry Wood

Dry wood is a good electrical insulator and cannot conduct electricity. A block of completely dry wood like seasoned wood that uses as firewood is an excellent insulator, which can be compared with insulators such as phenol-formaldehyde resin. But with increasing moisture, its electrical resistance decreases.

Glass

Glass is usually a good insulator but heated to a high temperature it conducts electricity very well. The normally immobile electrons in the glass are raised to the conduction band by the high temperature and allow the glass to conduct

Gold

Gold. Gold is an excellent conductor of electricity. Due to its cost, however, it is largely limited to high-end audio and video components and electrical wiring. An advantage gold has over its superior conductive counterparts, silver and copper, is that it is resistant to corrosion.

Steel

Most metals conduct electricity to a certain extent. Some metals are more highly conductive than others. Copper, Silver, Aluminum, Gold, Steel and Brass are common conductors of electricity. The most highly conductive metals are silver, copper, and gold.

Rubber

Rubber is naturally a very good insulator and a very poor conductor. ... Rubber is like an insulator. And when the standard of the rubber used to insulate a conductor carrying a high current is low, current leakage will occur, thus electricity flow through the insulator (rubber).

Copper

So copper is a lattice of positive copper ions with free electrons moving between them. ... The electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons, because they help copper to be a good conductor of heat and electricity

Sea Water

The chlorine ion has an extra electron, which gives it a negative charge. When an electric potential is applied, the positively-charged sodium ions are attracted to the negative pole and the negatively-charged chlorine ions are attracted to the positive pole. These ions carry the electricity through water.

Silver

The reason silver is the best electrical conductor is because its electrons are freer to move than those of other elements. This has to do with silver's crystal structure and electron configuration.


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