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What is the difference between drift speed and speed of the current |
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Answer» Hi In physics a\xa0drift\xa0velocity is the average velocity attained by charged particles, such as electrons, in a material due to an electric field. Applying an electric field adds to this random motion a small net flow in one direction; this is the\xa0drift. The\xa0drift velocity\xa0is directly proportional to\xa0current. The\xa0drift velocity\xa0is the average\xa0velocity\xa0that a particle, such as an electron, attains in a material due to an electric field. In general, an electron will propagate randomly in a conductor at the Fermi\xa0velocity.\xa0The average\xa0velocity\xa0of the free charges is called the\xa0drift velocity\xa0and is\xa0in the\xa0direction opposite to the electric field for electrons. The carriers of the\xa0current\xa0each have charges q and move\xa0with a drift velocity\xa0of magnitude vd.\xa0Current\xa0density is the electric\xa0current\xa0per unit area of cross-section. |
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