A electric field exits wherever an

A electric field exits wherever an electrical force acts on a charged particle. The magnitude of an electric field at a point is equal to the force that would act on a charge of +1C palced there. The direction of the field is the direction of the force on the charge. The unit of electric field is the newton/coulomb (N/C)
The electric field is zero everywhere inside the conductor. Of an isolated conductor carries a charge, the charge resides in its surface.
Electric potential is a scalar characteristic of an electric field, independent of the charge that may be placed in the field. However, when we speak of potential energy, we are referring to the charge-field system.

Results (English) 2:

一个电场的存在在电力作用在带电粒子。在一个点的电场的大小等于力会作用于充电1C放那里。磁场的方向是对电荷的作用力的方向。电场的单位是牛顿/库仑（N / C）
电场处处为零的内部导体。孤立导体带电荷，电荷驻留在其表面。
电位的电场的一个标量特性，独立，可以放置在电场中的电荷。然而，当我们谈论的势能，我们指的是电荷场系统
。