电势差和电场强度都是描述电场性质的物理量,都由电场本身决定.电场强度是从力的角度描述电场性质的物理量,是矢量;电势差则是从能量角度来描述电场性质的物理量,是标量.学习电场强度与电势差要抓住两个关键. Electric potential and electric field are all physical quantities that describe the nature of the electric field and are all determined by the electric field itself.Electric field strength is a physical quantity that describes the nature of the electric field from a force point of view and is a vector and a potential difference is a physical quantity that describes the nature of the electric field from an energy point. Learning electric field strength and potential difference should seize the two key.