The Application Of Plane Geometry Knowledge To The System Of Physics And Electromagnetics Test In High School

The development of a country's soft power begins with basic education.As an indispensable science discipline in basic education,physics has laid the foundation for the development of the country's soft power.The learning requirements and content of each subject are determined by the curriculum standards,and the curriculum standards are the reference for the preparation of the college entrance examination syllabus.Under the guidance of the syllabus,through the college entrance examination to select the country's outstanding talents.Electromagnetics is the core content of high school physics curriculum standards and syllabus,and it is also the focus of assessment.Therefore,it is very necessary to study the electromagnetic topics.This article firstly compares and analyzes the high school physics college entrance examination syllabus and the high exam questions in the past five years.It is found that one of the two calculation problems in the physical college entrance examination must be the subject of electromagnetics,and the score is very heavy.By summarizing and summing up the knowledge points of high school physics and electromagnetism,it is found that each year's examination scope of electromagnetism is the same 37 knowledge points and has never changed;only the requirements for examination of three knowledge points have changed.In this way,the contents and requirements of the examination of electromagnetic knowledge can be locked.This paper presents a statistical analysis of the scores,types of questions,and test centers for the physical examinations for all provinces in 2013-2017.Summarized the electromagnetic examination questions among the often-tested physics knowledge points: the motion of charged particles in uniform electric field,uniform magnetic field,kinetic energy theorem and functional relations,circular motion,electromagnetic induction law.Frequently applied mathematics knowledge points in electromagnetism test questions include trigonometric functions,circles,straight lines,parabolas,triangles,images,quadratic equations,and series of numbers in plane geometry.Through analysis,it was also found that the average probability of occurrence of charged particles in electromagnetic calculations was as high as 63%,and the average annual charged particle type accounted for 87.6% of the electromagnetic calculations.In other words,as long as the electromagnetic calculation problem is considered,it is highly likely that the charged particle type will be examined.Therefore,the focus of this article is to focus on the research and compilation of charged particle problems.By referring to a large number of literatures,this paper finally classifies the charged particles in the magnetic field into four categories according to the presence of charged particles in different field environments,namely: the movement of charged particles in an electric field,the motion of charged particles in a magnetic field,and the charged particles The movement in the electromagnetic field and the motion of charged particles in the coexistence of three fields of the electric field and the magnetic field gravitational field.This article summarizes and analyzes the physics and mathematics points examined in these four categories of topics,and finds the core mathematical ideas and methods for solving such physics problems.It is the application of plane geometry problems in mathematics to specific physical models.The research findings are mainly as follows 4 common types:1.The circular motion of a charged particle in a magnetic field and the linear motion in an electric field lead out the geometric relationship between a straight line and a curve in a plane geometry,a straight line and a circle,and a circle and a circle,and find the center of the particle motion through a geometric relation to draw a motion trajectory To answer questions.2.Analyze and summarize the critical problem of the motion of charged particles in a bounded field.3.The motion of the charged particles in the external field,the problem of the sequence of proportional changes in the path.4.The multi-path problem of moving particles with the same displacement in the external field.The above research profoundly embodies the mathematical ideas of geometric relations of plane geometry in the solution and construction of physical models.This mathematics idea provides an effective method and means for creating original test questions.This is also the innovation of this article.Based on the above mathematics,the paper uses original mathematics model method to compile five exam questions.The five types of questions are: examples of self-executing questions about applying a series to solve motion trajectories;examples of self-editing questions about parabola;examples of self-tailored questions about critical questions of motion trajectories;examples of self-written questions about the relationship between circles and circles.Example of a self-test question about the relationship between triangles and circles.In this paper,the profound mathematical connotation of the motion law of charged particles in the external field is excavated.Through the mathematical connotation,the physical model is constructed,which provides an effective way of thinking and method for the original preparation of this type of questions.