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教材和平时有关欧姆表的问题中欧姆表都是逆向刻度,即表头指针偏转角越大、电流越大、对应电阻的刻度值却越小.为了在物理教学中培养学生灵活思考问题、发散思维的能力,而设计了顺向刻度的欧姆表,对相关的问题进行了分析,同时为了提高学生在平时解决物理问题的能力,对反向刻度欧姆表与顺向刻度欧姆表的不同点和相同点进行具体的分析.
Textbooks and peacetime problems in the ohm table are reverse scale, that the larger the pointer pointer deflection, the larger the current, the smaller the corresponding scale value of resistance.In order to cultivate students in the physical teaching of flexible thinking, divergence Thinking ability, and the design of the forward scale ohmmeter, the related problems were analyzed, in order to improve students’ ability to solve physical problems in the usual time, on the reverse scale Ohm meter and forward scale Ohm meter differences and The same point for specific analysis.