2023年高考全国甲卷物理第25题的深入分析  

An In-Depth Analysis on Physics Question 25 in 2023 National College Entrance Examination Volume A

作　　者：罗恒 LUO Heng(Sichuan Shuangliu Middle School,Chengdu,Sichuan 610200)

机构地区：[1]四川省双流中学,四川成都610299

出　　处：《物理通报》2024年第6期133-136,共4页Physics Bulletin

摘　　要：对2023年高考物理全国甲卷第25题进行分析,从磁场中“导轨+滑杆”模型的特点出发,给出了在高中阶段此类题型的常见解答过程,并从微积分思想的角度分析微积分在解决电磁感应问题中的应用.同时,对题目中金属棒P、Q可能的碰撞次数进行了分析,题目中“碰撞一次后”的表述是十分严谨的.The paper analyzes the physics question 25 in 2023 National College Entrance Examination volume A.Starting from the characteristics of the“guide rail+slider”model in the magnetic field,the paper gives the common solution process of such problems in the high school stage,and analyzes the application of calculus in solving electromagnetic induction problems from the perspective of calculus thinking.At the same time,the possible collision times of the metal rods P and Q in the problem are analyzed.The expression of“after a collision”in the problem is very rigorous.

关 键 词：高考物理 法拉第电磁感应定律 微积分思想 

分 类 号：G633.7[文化科学—教育学]