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伏安法测电源的电动势和内阻的实验是高考中的热点,主要考查对该实验原理的理解,涉及实验步骤和误差分析,即学会用各类图象处理实验数据,求出电源电动势E和内阻r,分析电表内阻对实验结果产生的影响.高考命题不仅局限于教材上的实验项目,还关注方法的迁移,考查学生知识迁移的能力和创新思维能力,这从2014年全国新课标理综Ⅰ卷第23实验题可看出,虽然它属于常规的用伏安法测电源电动势和内阻,只是将学生常见的类型进行了改
Voltammetry power supply emf and resistance test is a hot college entrance examination, the main test of the understanding of the experimental principle, involving experimental steps and error analysis, that learn to use various types of image processing experimental data, find the power electromotive force E And internal resistance r, analyze the impact of meter resistance on the experimental results.The college entrance examination proposition is not limited to the experimental projects on the teaching materials, but also focus on the migration of methods, examine the ability of students to transfer knowledge and innovative thinking ability, which from the 2014 national new Volume standard physical comprehensive volume Ⅰ Volume 23 experimental questions can be seen, although it is conventional volt-ampere method to measure the power electromotive force and internal resistance, but to change the common type of students