电流和水流六级英语作文
the flow of electricity through wires and cables from the main supply can be compared with the flow of water through pipes from a water tank.
when the tap is turned off, the water does not move, but when a tap is turned on the height of the water in the tank exerts pressure on the water in the pipes and forces it through the outlet. this water pressure is comparable with voltage in electricity. the rate of the water flow, similar to the flow of current, is controlled by two things: the pressure and the size of the outlet. for example, a very narrow spray allows less wager to flow than a wide pipe. similarly in electricity, a very thin wire restricts or resists the flow of current.
electricians measure this resistance in ohms and the flow of the current in amperes
【电流和水流六级英语作文】相关文章：
涡电流的原理和应用07-07
吉林高考零分作文 追忆试水流年01-13
我和陈明续写英语作文03-27
水流域背景下我国古代文学探讨07-07
追忆试水流年高考零分作文大全01-09
高二物理恒定电流知识点总结10-15
探析中国英语和中国式英语的差异06-18
探讨小接地电流系统内部过电压预防04-25
浅谈小电流系统单相接地故障的处理04-09
经眼内巩膜切开术对房水流畅系数的影响03-08