Synonyms for this sense include director, manager, and supervisor. Sometimes, conductor is used in a very general way to refer to someone who is in charge of conducting, directing, or managing something. More specific terms like electrical conductor are sometimes used. Such a material functions as a medium for these things (such as an electrical current) to travel through. This person may alternatively be called a ticket collector or a ticket taker.Ĭonductor is also a word for a material that conducts electricity, heat, light, or sound. This sense of the word is also sometimes used for a person who does this on a bus. In general, such a person could be called a train conductor. On trains, the word conductor often refers to the worker in charge collecting fares or tickets from passengers, among other duties, such as announcing stations. An especially talented conductor might be called a maestro. The position can also be called director. The specific terms orchestra conductor and choir conductor are sometimes used. In the context of music, a conductor is the one who conducts a musical group, especially an orchestra or choir. Unlike metals, the conductivity increases with increasing temperature.Įxample: Germanium, Silicon, Cotton, Wool, Marble, Sand, Paper, Ivory, Moist air.The word conductor is used in several different senses, and each has different synonyms. At absolute zero temperature, the semiconductor behaves like an insulator whereas by providing thermal agitation, the charge carriers start moving from valence band to conduction band.ĭue to the exchange of electrons – to achieve the noble gas pattern – semiconductors arrange as a lattice structure. The current conduction capacity of the semiconductor can be increased by adding suitable impurities. They are the elements whose conductivity lies between insulators and conductors. They are solids whose conductivity lies between the conductivity of conductors and insulators. The materials whose current conduction capacity lies between that of conductors and insulators in normal temperature are called semiconductors. The resistivity of the conductor is given as 10 -8 Ohm/cm.Įxample: Copper, Mercury, Silver, Al, Water, Acids, Human Body, Metallic Salt, Charcoal. Conductors are having a positive temperature coefficient of resistance. Due to this reason, metallic wires are used as electrical connectors. They are the elements which consent to the flow of electric current through it by the function of voltage. So, metallic materials are good conductors of electricity. In metal wires, the charges are carried by electrons. The conduction heat transfer also occurs when the solid bodies in difference temperature contact. Conduction heat transfer continues until the body reaches the thermal balance conditions. Electrons can flow freely within these materials. Heat conduction, also named thermal conduction, is the heat flux in a body due to temperature difference and occurs by the movement of electrons within a body. They are usually substances which have the property to pass dissimilar types of energy. The materials through which electric current can flow very easily are called conductors.
CONDUCTOR DEFINITION PHYSICS FREE
There are no free charge carriers to enable the current flow.ĭue to this, the handles of screwdrivers and pliers used by electricians are covered with plastic type materials In addition, the copper wires which we use in our daily needs are covered with plastic.Įxample: Wood, Rubber, Glass, Ebonite, Mica, Sulphur, Dry air. By electrical forces, the particles are held together. The ionic bond: In the solid state, ions are arranged in a grid network. The elements which behave like nonmetals have the craving to catch electrons, thus there are no free electrons which may serve as charge carriers. The atomic bond: It is based on shared electron pairs of nonmetals. Thus electrons do not move from valence band to conduction band under the influence of any thermal agitation. The valence band and conduction band are divided by the energy band gap of 6eV. As a result, plastics are an insulator for electricity. Electrons do not flow easily through plastic type materials. There are no free electrons inside insulating materials. For example Plastic, rubber, wood, glass, etc. They are the elements which do not consent to any flow of electric accusation. Therefore, the materials where electrons are not free to move about are the insulators.
They possess no free charge carriers and thus are non-conductive. The materials through which electric current cannot flow are called insulators. For example – (1) conductor (2) insulator (3) semiconductor. Solid materials are classified into three groups depending on their electricity conduction. There are some mediums through which electricity cannot move at all. This is true for many materials (including.
This electric current can move very easily through some substance. Ohms law states that the current through a conductor is proportional to the voltage across the conductor.
We know, the electric current is the flow of charges through a material.
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