which of the following is the best conductor of electricity

If we compare two types of material and the first one allows better flow of electricity through it, then that material is said to be a good conductor of electricity. In order of most conductive to least conductive: Certain factors can affect how well a material conducts electricity. As we know that brass is not as conductive as copper, increasing the brass content doesn’t enhance the conductivity of brass. What groupings on the periodic table are made up of elements that react similarly? However, most non-metals are not good conductors of electricity. These electrons are easier to move. Although gold is not as good a conductor as silver or copper, it is still used because it is less corrosive and more durable than silver. Festival of Sacrifice: The Past and Present of the Islamic Holiday of Eid al-Adha. of course, silver is the best conductor of electricity. The spoon became warm. Emily made a cup of tea and stirred it with a spoon. It varies from material to material. Superconductors are elements or metallic alloy, when cooled below a certain threshold temperature, lose electrical resistance property and become superconductors. Although semiconductors are not as good at conducting electricity as conductors, they still have their uses. This category only includes cookies that ensures basic functionalities and security features of the website. There is a lack of covalent character. Silver is not always an ideal choice as a material, however, because it is expensive and susceptible to tarnishing, and the oxide layer known as tarnish is not conductive. Silver . The superconductivity phenomenon was discovered by Heike Kamerlingh Onnes, the Dutch Physicist in the year 1911. Like all the other metals, it has a cloud of an electron because of the free electrons in the valence shell. It is used in the internal wiring of the home, and most commonly it is used in combination with copper. Alloys like bronze and brass are also electrically conductive. Silver also has the highest thermal conductivity of any element and the highest light reflectance. as it is shown in figure. In this article, let us know the best conductor of electricity and its properties. One of the reasons for copper being a good conductor is that its valence shell is far from the nucleus. Most metals conduct electricity. Factors That Affect Electrical Conductivity, 10 Examples of Electrical Conductors and Insulators, The Properties and Applications of Platinum, Table of Electrical Resistivity and Conductivity, Understanding Electrical, Thermal, and Sound Conductors. Like silver and copper, it has the same structure of atom. It is mandatory to procure user consent prior to running these cookies on your website. Factors affecting electrical conductivity​, Heli Pilot Professional Joins Team Futaba, Best RC Tank 2017: Buyers Guide & Reviews. Stay tuned to BYJU’S and KEEP FALLING IN LOVE WITH LEARNING! Such materials offer less opposition or “resistance” to the flow of charges. Required fields are marked *, The inverse of conductance is called resistance. The influence of the nucleus decreases on valence electrons because the rest of the electrons are in the way, causing the shielding effect. As to why silver is the best conductor, the answer is that its electrons are freer to move than those of the other elements. So, it is a good conductor of electricity But, If we attach wires to the plastic part of the screwdriver, the bulb will not glow. sodium. They are one of the most common and best conductor of electricity. Which one of the following is best conductor of electricity: Gold; Zinc; Silver; Copper; Correct answer: 3. It is most likely a _____. is a good electrical insulator. Each material is different and has its characteristics and properties. Only at a certain level can platinum conduct electricity when its electrons become mobile. Which substance dissolves in pure water and produces a solution that is a good conductor of electricity? Thermal conductivity refers to the transfer of heat. [ very small] that's why silver is the best conductor of electricity. Every atom has some electrons in its valence shell. • The valence and crystal structure of silver makes it the best conductor of electricity. The more brass is mixed in the alloy, the more conductive it becomes. Comparatively, silver has better electrical conductivity than copper and gold. But opting out of some of these cookies may have an effect on your browsing experience. molecule. The location of the Lightning arrester is near. Necessary cookies are absolutely essential for the website to function properly. Conductivity refers to the ability of a material to transmit energy. For example, the wire around your house probably uses copper wires as conducting materials or their alloys. Because the size and shape of a substance affect its conductivity, the list assumes all samples are the same size. a) Silver b) Copper c) Gold d) Lead 2 See answers abhi178 abhi178 Answer : option (a) silver explanation : I think , all sixth standard students can say the answer without taking a second of this question . The charge density of a conductor is zero. As mentioned before, it also has valence electrons that can flow through the metal when an electric force is applied to it through a battery or any other source. These valence electrons, thus, have the freedom to move. The flow of current decreases because of the production of magnetoresistance from the external electromagnetic field. It has lattice structure, which allow easier flow of electrons through it. Your email address will not be published. Furthermore, quantum mechanics suggest that electrons can only occupy a discrete level of energy in an atom. Aluminum is a good conductor of electricity with it having 61%. After a certain level, the frequency causes the current to flow around the material instead of flowing through it. If it is attached to a battery, the electrons leave the atoms and move toward the electropositive end, creating electricity. Your email address will not be published. Conductivity decreases when impurities are added to an element because they hinder the flow of electron. Some of the best superconductors are niobium, cuprate, magnesium and diboride. Pure lead has 7% electrical conductivity. It also follows the free electron principle where the electron moves around and flows because of the repulsion caused by the electron from the electricity source. Copper is less expensive as compared to silver, whereas the gold has far better corrosion resistance as compared to silver. Another way to prevent getting this page in the future is to use Privacy Pass. Just like brass, bronze’s conductivity depends on how much copper is present in the alloy. Save my name, email, and website in this browser for the next time I comment. The more free electrons present in a metal, the greater its conductivity. heat. What Is a Semiconductor and What Does It Do? Thus, there are no free electrons to move around. a. Electrical wires are coated with a rubber or plastic because these materials are good. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Nickel, iron, platinum, zinc and aluminum also have high electrical conductivity. Furthermore, it will slow down at the interface in different phases of the material. This has to do with its valence and crystal structure. 1. Copper is used because it is less expensive. For example, the carbon in the form of graphite is a very good conductor of electricity. There are different types of conductivity, including electrical, thermal, and acoustical conductivity. Your email address will not be published. Pure nickel is, thus, used in making wires and battery component. Among the following, copper is a good conductor of electricity. Even then, it is not such a good conductor. True. as you know, a conductor of electricity means current flows through it. Stainless steel is 3% conductive. Glass, Plastic and Air are some common examples of insulators. Nickel and zinc plating for electrolytic solutions is also very famous. It is a highly unreactive compound which means that the electrons take a lot of force to get excited and start moving around. Silver is the most electrically and thermally conductive metal. Other metals with a high level of electrical conductivity are copper and gold. Iron, being a metal, also has free electrons in its valence shell that, with some force from the attached battery, start flowing through it. All points of a conductor are at the same potential. b *Given the balanced equation: 2Na + 2H2O >2X + H2 What is the correct formula for the product represented by the letter X? These electrons electric charge is applied to the material at specific points; the electrons start to move and allow electricity to pass through it. Gold is a good conductor of electricity. This leaves one electron free for bonding. When electrons are in the last shell, the nuclear attraction is relatively less and even a little bit of electric force would be enough to move them. A conductor exhibits the following properties in equilibrium condition: Many metals are good conductors of electricity. groups/families. This phenomenon can't happen in an insulator as the electrons are tightly packed and nuclear attraction is high. Materials which have good mobility of electrons are known as conductors and materials with less mobility of electrons are referred to as insulators. Conductivity might vary in different structures. a. CO2 b. KCl c. CO d. C6H12O6. It is used in the internal wiring of the home, and most commonly it is used in combination with copper. Since silver is far more expensive than copper, copper finds its application in all household appliances and circuits. The electric field of a conductor is zero allowing electrons to flow within them. Silicon dioxide, SiO2, is a(n) _____. or you can say that value of resistivity is lower. Although silver is the most electrically conductive element, copper and gold are more commonly used in wiring and electronics. Most metals are able to conduct electricity. Which of the following is the best conductor of heat? Conductors in their solution form are called ionic conductors. This list of electric conductivity includes alloys as well as pure elements. Which of the following aqueous solutions will be the best conductor of electricity and why? Bronze, like brass, is an alloy of copper with tin mixed in it. Required fields are marked *. Other metals and nonmetals are also added to it sometimes.

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