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在近几年的高考中,实验“测量电源的电动势和内阻”的试题分布见下表.实验2012年2011年2010年2009年测量电源的电动势和内阻福建卷、重庆卷四川卷广东卷、江苏卷、上海卷北京卷、海南卷从上表可以看出:该实验一直受到高考命题者的青睐,可谓是百考不厌,常考常新.现就相关试题归类赏析,以飨读者.一、伏安法例1(2012年重庆卷)某中学生课外科技活动小组利用铜片、锌片和家乡盛产的柑橘制作了果汁电池,他们测量这种电池的电动势E和内阻r,并探究电极间距对E和r的影响.实验器材如图1所示.
In recent years, college entrance examination, experiment “test the electromotive force and internal resistance ” test questions distributed in the table below.Experiment 2012 2011 2010 2009Measuring the electromotive force and internal resistance of the power Fujian, Chongqing, Sichuan Guangdong volume, Jiangsu volume, Shanghai volume Beijing volume, Hainan volume As can be seen from the above table: This experiment has been favored by the college entrance examination proposition, can be described as a hundred test does not tire, often test often .Classification Appreciation of the relevant questions to伏 Readers. Vol. 1 (Vol. 2012, Chongqing) A secondary school student extracurricular science and technology activity team made use of copper, zinc and citrus-rich citrus fruit juice batteries to measure the electromotive force E and internal resistance r, And explore the electrode spacing on the impact of E and r. Experimental equipment shown in Figure 1.