What material is a good electrical conductor?Dailys49 - 12 Answers
All metals are good conductors of electricity. Copper, Silver, Gold, Aluminum, Iron are some metals that are good conductors of electricity.
Metals are good conductors of electricity due to the presence of free electrons in the outermost shells of the atoms of metals. Each metal atom in a metal has a number of outermost electrons that are free to escape that atom, and travel freely through the volume of the metal. These electrons, however, do not have the energy required to escape the metal surface. Thus they remain in the metal and travel in random directions.
When the two ends of a metal piece are connected to a battery, the electrons in the metal are made to travel in one particular direction: from the negative terminal of the battery to the positive terminal. Since the movement of charge constitutes electricity, therefore this movement of electrons caused in the metal due to the potential difference applied by the battery constitutes electricity.
Thus metals are good conductors of electricity.
Copper and aluminum are the common materials for conductor. Copper has better mechanical strength but much more expensive compare to aluminum. Human around the world still seek for super conductor material that very low resistance so it can transfer electric effectively. V= I*Z is standard equation used in electric system. This means while Z ( reluctance = resistance ) arises then it will need higher voltage to transfer certain current of electricity.
The best conductors we have so far is gold. The gold uses in IC ( intregated circuit) as conductor between dice (IC brain) with the legs/ leads.
But the gold also quite expensive. This is why The IC price is expensive while you replace it on your electronic appliance.
Gold is the best conductor with regards to the metals but due to the cost is used sparsely and you also have copper which is a good conductor which is cheaper than gold but in recent economic conditions has acquired a nice price tag itself. Silver is a good conductor and is not as expensive as gold but the price of silver has risen recently due to the economy. Another conductor is aluminum which is cheaper than the previous three mentioned but also has its limitations. One thing about aluminum is the way it handles heat generated as this can be seen from both positive and negative viewpoints....
Gold silver copper and aluminum are all great conductors they all have their ups and downs like aluminum is very light it is frequently used in aircraft to save on weight copper is used a lot to because it is very cheap gold is used on small meticulous items , what makes a good conductor is the number of valence electrons that they have that they can give up if they have a lot that they can give up that makes a very good conductor just a few is what they use to make a semi conductor such as silicon or carbon and an insulation has a very very low number of valence electrons...
A good electrical conductor is a material that has high mobility of electrons and a high density of free electrons.
By definition metals are good conductors.
Super conductors are good until they exceed the critical temperature then they are awful, or if they exceed a critical field they are awful. This is due to some extreme quantum mechanical problems that are still unsolved for materials like YBCO
Semi-Conductors can be 'good' if they are doped accordingly, doping supplies the material with free electrons and holes to act as charge cariers
The materials that conduct electricity the most efficiently - with the least loss - are superconductors, which can conduct with almost 100% efficiency. This special property, however, only occurs at very low temperatures, the temperature of liquid nitrogen or lower, so this makes their use impractical for most applications.
Metals conduct electricity very well, and are the most commonly used electrical conductors, as Shingl72 has pointed out.
Copper is good conductor of electricity because it contain more free electron it's outermost shell orbital.
For Example: Copper conductor cable are used in low level signal receiver in RF Communication, Biomedical Instruments, etc.
Copper is a good conductor of electricity. Because it contain more free electron it's outermost shell orbitals. For example: Copper cable is used for low level signals receiver from RF Communication, Biomedical Instruments, etc....
Superconductors would be the best electrical conductors, but aren't your ordinary, everyday item. The best common conductors, start with silver as the best, followed by copper, gold and aluminum, in that order....
Silver is very good but because of expensiveness it is not suitable for home.
copper is suitable for home usage. Alluminium is less good than copper but it is used for long distance power transporting.
Super conductirs are the best conductor because it has high boiling point and virtual zero resistants so it can conduct 100x more than normal conductors...
Silver is the best but very expensive. Most common is copper because of cost and second to silver....