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Zhongshan tuohao electric appliance co. LTD| A detailed description of the current | ||||
| Publisher:amdin | Add time：2018/11/3 | Viewed：81 | ||
| Current is the directional movement of charge. The electromotive force of the power supply forms the voltage, which then produces the electric field force. Under the action of the electric field force, the charge in the field moves in a directional way, forming the current. The magnitude of the current is called current intensity (short for current, symbol I) and is the amount of charge per unit of time passing through A section of A wire. The amount of charge passing through A coulomb per second is called 1 "ampere" (A). The ampere is the basic unit of all electricity in the si system of units. In addition to A, common units are milliamperes (mA) and microamperes (ra). 1A=1000mA=1000000 kv A it is stipulated in electricity that the flow direction of positive charge is the current direction. The microscopic expression of current is I=nesv, where n is the charge passing through the conductor's cross section per unit time, e is the charge of the electron, s is the cross-sectional area of the conductor, and v is the charge velocity. Automatic plug-in line, woolen sweater factory, tianjin car rental, pipe bender, LED wall lamp shell, tianjin discount air tickets, brand underwear. | ||||
