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电磁感应部分历来是高考的重点、热点,出题时可将力学、电磁学等知识融于一体,能很好地考查考生的理解、推理、分析综合及应用数学处理物理问题的能力。通过对近年高考题的研究,此部分结合动量定理的力电综合模型经常在高考题中出现。本文结合例题分析应用动量定理解决电磁感应问题的几个思维起点。一、以累积公式q=It结合动量定理为思维起点
Electromagnetic induction has always been the focus of the college entrance examination, hot spots, questions can be mechanics, electromagnetics and other knowledge into one, can well examine the examinee’s understanding, reasoning, analysis and application of mathematical ability to deal with physical problems. Through the study of college entrance examination in recent years, this part combines the momentum theorem of power synthesis model often appear in the college entrance examination questions. In this paper, a few thinking starting points for solving the problem of electromagnetic induction by applying momentum theorem are analyzed in combination with examples. First, with the cumulative formula q = It combined with the momentum theorem as a starting point for thinking