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1987年高考物理试题第四题,是一道多条思路多种解法的好试题。它可以考察考生在分析问题和解决问题上的能力;可以充分发挥考生的聪明才智。但对于第四题的参考解答,黑龙江省教育学院钱源海、浙江宁波效实中学张曦、杭州制氧机厂中学林国鑫、安徽省新技术推广站黄立选、贵州师大物理系张孝菊、湖北武汉市二中李大武、江苏无锡吴桥中学俞国华、江西崇仁县二中川余、四川自贡市六中唐世平等同志提出了如下的意见。原题:把一个“10V、2.0W”的用电器A(纯电阻)接到某一电动势和内阻都不变的电源上,用电器A实际消耗的功率是2.0W;换上另一个“10V、5.0W”的
The fourth question of the physics test of the college entrance examination in 1987 was a good test of multiple ideas and multiple solutions. It can examine candidates’ ability to analyze problems and solve problems; it can give full play to candidates’ intelligence and intelligence. But for the reference to the fourth question, Qian Yuanhai of Heilongjiang Education Institute, Zhang Xiao of Zhejiang Practical High School, Lin Guoxin of Hangzhou Oxygen Generator Factory, Huang Lixuan of Anhui Province New Technology Promotion Station, Zhang Xiaoju of Guizhou Normal University, Wuhan, Hubei Province Li Dawu of the City No. 2 Middle School, Yu Guohua of the Wuqiao Middle School in Wuxi of Jiangsu Province, Chuanyu of No. 2 Middle School of Chongren County of Jiangxi Province, and Liu Shitang of the Sixth Middle School of Zigong City of Sichuan Province put forward the following opinions. The original question: Put a “10V, 2.0W” appliance A (pure resistor) to a power supply with constant electromotive force and internal resistance. The actual power consumed by appliance A is 2.0W; replace with another appliance. One “10V, 5.0W”