依据“电学黑箱子”所含电学元件的不同,“电学黑箱子”问题可分为多种类型,但高中阶段只要求掌握“纯电阻黑箱子”、“含电源黑箱子”、“含二极管、电容器黑箱子”三种类型.1“纯电阻黑箱子”的求解方法(1)用多用表欧姆档测量黑箱子外任意两接线柱间的电阻,记录测量结果.(2)根据测量结果作出判断——电阻值为零的两接线柱之间接的是导线;电阻值不为零的两接线柱之间接的是定值电阻. According to the “electrical black box” contains the different electrical components, “electrical black box ” problem can be divided into many types, but only required to grasp the high school “pure resistance black box ”, Box “, ” Diode, capacitor black box “three types .1 ” pure resistance black box "solution (1) multimeter Ohm file measuring black box outside any resistance between the two terminals, Record the measurement results. (2) Make a judgment based on the measurement result. The two terminals with a resistance of 0 are indirectly connected with the lead wire. The indirect connection between the two terminals with a non-zero resistance value is a fixed value resistor.