在近几年各类初中物理竞赛中，非常规电表题比比皆是．求解此类试题，所用知识并未超过初中电学范围，但却要求学生有较高的逻辑性思维和创造性思维能力．现分类导析如下：一、电表改装的问题例1（1995全国初中应用物理知识复赛压轴题）学生电学实验用表是用电流表根据需要附加 In various types of junior high school physics competitions in recent years, unconventional meter questions abound. Solving such questions, the knowledge used does not exceed the scope of junior high school electricity, but it requires students to have a higher logical thinking and creative thinking ability. The current classification guides are as follows: First, the problem of meter modification example 1 (1995 national junior high school applied physics knowledge rematch finale title) student electrical experiment table is attached by ammeter according to need