电学实验是历年来高考考查的重要内容,从仪表的读数、仪器的选用到电路的设计及实物的连线,考查非常全面,尤其近年对这方面的要求有上升趋势,因此正确理解、掌握实验原理及科学的解题方法应作为重点对待.对这类题目既要根据实验目的的要求和现有器材考虑使用哪种电路,又要结合 The electrical experiment is an important part of the college entrance examination examination over the years. From the reading of the instrument, the selection of the instrument to the design of the circuit and the connection of the physical object, the examination is very comprehensive. In particular, the requirements for this aspect have been on the rise in recent years, so the understanding and experimentation are correctly understood. Principles and scientific problem-solving methods should be treated as key points. For such questions, it is necessary to consider which circuit to use according to the requirements of the experimental purpose and the existing equipment, and to combine