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变压器是高中物理的重点内容,也是高考高频考点,仅2016年理综试卷中,有江苏、四川、天津、全国卷Ⅰ、全国卷Ⅲ等考了变压器。变压器原线圈有负载的问题,涉及知识多,运算量大,是变压器问题的难点,学生大多感到困难。用等效电阻法能有效降低难度,简化问题,下面以2016年全国卷Ⅰ一道高考题为例,用变压器等效负载电阻法加以分析。一、变压器等效负载电阻公式的推导
Transformer is the focus of high school physics, high school entrance examination is also a high frequency test center, only 2016 rationale for comprehensive examination papers, Jiangsu, Sichuan, Tianjin, the National Volume I, the National Volume III and other tests of the transformer. Transformer primary coil load problems, involving more knowledge, large amount of computation, is the difficulty of the transformer problems, most of the students feel difficult. Equivalent resistance method can effectively reduce the difficulty and simplify the problem, the following 2016 Volume I a college entrance examination as an example, with the transformer equivalent load resistance method to be analyzed. First, the transformer equivalent load resistance formula derived