Proposition On The Motion Of Charged Particles In Electromagnetic Field

The college entrance examination is an important way of talents selection in our country,whilethe electromagnetism occupies a large proportion in it,so the research of electromagnetism related knowledge is necessary.In this paper,by analyzing the static electric field and magnetic field curriculum standards and teaching material content,the related content outline of college entrance examination test request,the author found thatthe requirements and frequency of this part of knowledge is relatively high in the National physical CEE volume.The analysis of typical CEE calculation questions of charged particle movement in electromagnetic field shows thatthe design of related physical knowledge is not difficult;most of the questions are according to horizontal cast exercise in the electric field,circular motion or half circular motion in magnetic field of charged particle.But this part of knowledge often take the form of last question,the most difficult part generally appears in the use of geometry knowledge to solve the radius of the particle movement.In the process of solving the questions,the student should apply geometrical knowledge,trigonometric function relationship(orthogonal trigonometric functions),circular and linear relationship,the relationship between circle and circle,triangle and circle of relationships,etc.So students are required to have solid mathematical foundation.Meanwhile,it provides a thinking style of how to solve charged particles moving in the electromagnetic field exam questions,namely first roughly draw the trajectories of particles,and then use geometry knowledge to find outthe final answer.The CEE subjectspossess originality,students at ordinary times practice or test process;less original questions in the examination paper will the reliability of test in ordinary practice.So teachers are required to have the ability of given the original questions in the exam.This paper tries to start from combining several forms of ideas,to find a way of how to give test questions in charged particles moving in the electromagnetic field,hope to enlighten physics teachers.The geometry locus of particle motion in the electromagnetic field,use the geometric proof related questions for charged particles moving in the electromagnetic field problems to form a system model,according to the model set the appropriate physical scene again,then the original questions in the exam paper will be made.Steps are as follows:(1)select geometry exam questions;(2)set up the physical scene,and preset conditions;(3)to determine the physical problems;(4)modify description language expression;(5)test question analysis and answer.