功能问题是高中物理的重点,也是难点,又是高考的热点。电磁感应问题在高考中的命题频率也较高,且综合能力较强,而电磁感应与能量知识相结合的综合题的分析与计算,有利于高考五种能力的考察,有利于高考选拔人才,是不容忽视的考点,更是令考生头疼的首要。 Functional problems is the focus of high school physics, but also difficult, but also the hot college entrance examination. The electromagnetic induction problem in the college entrance examination in the higher the frequency of the proposition, and the comprehensive ability of strong, and the combination of electromagnetic induction and energy knowledge of the comprehensive analysis and calculation is conducive to the five examinations of college entrance examination is conducive to college entrance examination selection of personnel, It can not be ignored test sites, but also make candidates a headache.