电路知识在实际生活中有许多应用,如速度计、加速度测量仪、电子秤等,都是通过对电路的巧妙设计,去测量有关的物理量.做这类试题,既能培养同学们理论联系实际的能力,又能培养同学们不断创新的精神,因而这类试题在高考中也备受命题专家的青睐. There are many applications of circuit knowledge in real life, such as speedometers, accelerometers, and electronic scales, which are based on the clever design of the circuit to measure the physical quantities involved. To do this kind of test can not only cultivate the students’ theory and practice The ability to cultivate the students’ spirit of continuous innovation also makes these questions highly popular among proposition experts in the college entrance examination.