Pure elemental silver is the best conductor of electricity. Copper, gold, aluminium are good conductors of electricity.
Which of the following is the best conductor of electricity?
Metals conduct electricity easily and the best conductor out of these are silver. The reason behind it is that in silver, there are electrons free to move than those in other elements which results in it to be the best conductor of electricity followed by Copper and Gold. Hence, option (D) is the correct option.
Which is the best conductor of electricity copper or Aluminium?
Aluminum has 61 percent of the conductivity of copper, but has only 30 percent of the weight of copper. That means that a bare wire of aluminum weighs half as much as a bare wire of copper that has the same electrical resistance. Aluminum is generally more inexpensive when compared to copper conductors.
Which metal is the best conductor of electricity class10?
Silver is the best conductor of electricity because it contains a higher number of movable atoms (free electrons) owing to the fact that gold has a preceding f-orbital from the actinide series.
Which metal is poorest conductor of electricity?
Bismuth and tungsten are two metals which are poor conductors of electricity.
Why aluminium is preferred over copper?
Aluminium is a metal. Generally, copper is used in household electrical wires but when it comes to overhead power cables aluminium is preferred because it has better conductivity to weight ratio. Complete answer: … Copper is a good conductor and it conducts electricity better than aluminium.
What are 5 good conductors?
Why is copper more expensive than aluminium?
The tensile strength of copper allows it to bear the stresses of wear and tear over time without the same effects as aluminum. Thus it’s a much more stable material choice. Due to its high ductile properties, copper can be formed into very fine wire. … Copper is much more expensive than aluminum.
Which is the best insulator?
The best insulator in the world right now is most probably aerogel, with silica aerogels having thermal conductivities of less than 0.03 W/m*K in atmosphere. of aerogel preventing ice from melting on a hot plate at 80 degrees Celsius! Aerogel has its amazing properties because it’s mostly made out of air.
Is Diamond a good conductor of electricity?
In a graphite molecule, one valence electron of each carbon atom remains free, Thus making graphite a good conductor of electricity. Whereas in diamond, they have no free mobile electron. Hence there won’t be flow of electrons That is the reason behind diamond are bad conductor electricity.
Is gold the best conductor of electricity?
Gold is used as a contact metal in the electronics industry as it is a good conductor of both electricity and heat.