论文部分内容阅读
近年来,初中物理中考试题出现了一些压轴题,其难度比平时练习的题要大,学生对题目初作了解,认为简单,于是就在不经意间出现一些错误的结果;有些又认为较为复杂,所以不去认真分析,随便就放弃了,本文就一道中考题的解法作分析,推出实用的方法,让学生在解题时加以应用,既省时又准确。在遵义市的物理中考试题中有这样一道题:如图所示的电路中,移动滑动变阻器的滑
In recent years, junior high school physical examination questions appeared some finale questions, the difficulty of the exercise than the usual question to be big, students first understand the subject, that simple, so inadvertently appear some erroneous results; some also think it is more complicated, So do not go serious analysis, just give up, this article on a test solution for analysis, the introduction of practical methods to enable students to apply the problem-solving, both time-saving and accurate. In the physical exam in Zunyi City, there is such a problem: the circuit shown in the figure, sliding sliding rheostat slip