what is a conductor science
These effects can be mitigated with suitably designed connectors and extra care in installation, but they have made aluminum building wiring unpopular past the service drop. Mercury is an excellent example. In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge (electrical current) in one or more directions. At commercial power frequency, these effects are significant for large conductors carrying large currents, such as busbars in an electrical substation,[2] or large power cables carrying more than a few hundred amperes. An increase in temperature will also increase the number of phonons generated within the material. Votes are stored so they can be re-counted should the need arise. VDI explained, cloud application performance management (cloud APM), protected health information (PHI) or personal health information, What is edge computing? Conductivity, in general, is the capacity to transmit something, such as electricity or heat. Privacy Policy Everything you need to know, PCI DSS (Payment Card Industry Data Security Standard), Federal Information Security Management Act (FISMA), CISO as a service (vCISO, virtual CISO, fractional CISO), HIPAA (Health Insurance Portability and Accountability Act), What is a SAN? However, if a sample of gas contains a significant number of ions, it can act as a fair conductor. No problem! Although only 61% of the conductivity of copper by cross-sectional area, its lower density makes it twice as conductive by mass. Organic compounds such as octane, which has 8 carbon atoms and 18 hydrogen atoms, cannot conduct electricity. Then, the geometrical cross-section is different from the effective cross-section in which current actually flows, so the resistance is higher than expected. This formula is not exact: It assumes the current density is totally uniform in the conductor, which is not always true in practical situation. Aluminum wire is the most common metal in electric power transmission and distribution. The resistance, in turn, is determined by the material the conductor is made from (as described above) and the conductor's size. Another situation this formula is not exact for is with alternating current (AC), because the skin effect inhibits current flow near the center of the conductor. Famously, 14,700 short tons (13,300 t) of silver on loan from the United States Treasury were used in the making of the calutron magnets during World War II due to wartime shortages of copper. Much like the shaking of a pinball machine, phonons serve to disrupt the path of electrons, causing them to scatter. Some liquids are good electrical conductors. Do Not Sell My Personal Info, The substance which easily to allow large scaler flow of electric charge through them are called conductor, I loved this so I could check what is the meaning because science is hard. Materials made of metal are common electrical conductors. σ An electrical conductor is a substance in which electrical charge carriers, usually electrons, move easily from atom to atom with the application of voltage.


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