Which conductor is better than copper?
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Which conductor is better than copper?
The most electrically conductive element is silver, followed by copper and gold. Although it is the best conductor, copper and gold are used more often in electrical applications because copper is less expensive and gold has a much higher corrosion resistance.
Is graphite a better conductor than metal?
Graphite is an interesting material, an allotrope of carbon (as is diamond). It displays properties of both metals, and nonmetals. However, like a metal, graphite is a very good conductor of electricity due to the mobility of the electrons in its outer valence shells.
Why is graphite not a good conductor?
In graphite each carbon is bonded to three other carbon atoms hence leaving behind a free electron. Due to the presence of this one delocalised electron, graphite is a good conductor of electricity. However, graphite is the only non-metal that can conduct electricity. So, the correct answer is “Option A”.
Is copper the best conductor?
Copper has the best electrical conductivity of any metal, except silver. A good electrical conductivity is the same as a small electrical resistance. An electric current will flow through all metals, however they still have some resistance, meaning the current needs to be pushed (by a battery) in order to keep flowing.
Is graphite cheaper than copper?
Cost. Copper is often considered a commodity material and can be less costly than graphite in the bulk or blank stage. Many graphite materials are considered specialty materials and, as such, can be more costly. In addition, copper is recyclable whereas graphite is limited in its ability to be reclaimed.
Why is graphite used as a electrical conductor?
Each carbon atom is bonded into its layer with three strong covalent bonds. This leaves each atom with a spare electron, which together form a delocalised ‘sea’ of electrons loosely bonding the layers together. These delocalised electrons can all move along together – making graphite a good electrical conductor.
Is graphite good conductor of heat?
Graphite is a good conductor of heat and electricity because it contains: Layers of graphite are held by the weak van der wall’s force of attraction. Each layer is composed of planar hexagonal rings of carbon and each carbon atom makes three sigma bonds with three neighbouring carbon atoms.
Is graphite a good thermal insulator?
Graphite is a good conductor of heat and electricity because in graphite each carbon atom has a free electron in its valance shell,free electron are responsible for conductivity of electricity.
Why is graphite a good conductor of heat and electricity?
graphite is a good conductor of heat and electricity because in graphite each carbon atom has a free electron in its valance shell,free electron are responsible for conductivity of electricity.
Which metal is the best conductor?
Most of the best conductors of electricity are metals. The best conductors are silver, gold and copper, while the worst are mercury and certain alloys of stainless steel.
What metals are conductive?
Silver Conductivity. “Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons).
How conductive is copper?
Copper is Conductive Conductive of Heat: Copper has the highest thermal conductivity of any engineering metal. When good heat transfer is essential, as in heat sinks and refrigeration units, copper and brass are excellent choices. Top-quality saucepans are copper-bottomed to provide uniform heating and are, still today,…
What is the thermal conductivity of copper?
Related Questions More Answers Below. The thermal conductivity of pure copper is about 400 watts per meter kelvin. This means that a plate of copper with area A and thickness L whose faces are kept at a constant relative temperature difference of kelvin will conduct heat at a rate of joules per second.