2005/05/01 | 电流[Current]
类别(Ω〖物理〗) | 评论(0) | 阅读(43) | 发表于 14:25
A "flow" defined as the rate of a quantity passing a given point per unit time. When used without qualification, "current" generally refers to electric current, which is given by

where is the derivative of charge with respect to time.
Magnetic fields are generated by currents. The MKS unit of current is the Ampere, often abbreviated simply as the amp.
0

评论Comments

日志分类
首页[1408]
∑〖数学〗[349]
Ω〖物理〗[357]
¤〖天文〗[343]
℃〖化学〗[359]