电与磁之间的关系和原理
正式学习IGCSE数学课程之前,我们首先需要掌握一些基本的IGCSE数学单词,这样才能够避免学习中的一些不必要的麻烦和障碍。下面未来小编为大家整理了部分重点单词,来看看你是不是都掌握了呢? Mathematics(math)is the study of numbers,quantities,shapes,and space using mathematical processes,rules,and symbols.There are many branches of mathematics and a large vocabulary associated with this subject. Here are some math words and terms you will likely come across but may not know their precise meanings.Any word or term shown in bold is defined in the following alphabetical list of math words and terms. Algorithm A step-by-step mathematical procedure used to find an answer. Coefficient A number that multiplies a variable.For example,9 is the coefficient in 9x.Denominator The bottom number in a fraction.The denominator represents the number of parts into which the whole is divided.For example,6 is the denominator in the fraction. Equation A mathematical statement used to show that two expressions are equal.It contains an equals sign.For example,16-9=7(the expression 16-9 and the expression 7 are equal). Greatest Common Factor(greatest common divisor)The largest number that will divide two or more other numbers equally.For example,the greatest common factor of 32 and 48 is 16. Improper Fraction(mixed fractions)A fraction that has a larger numerator than denominator.For example,is an improper fraction. Inverse Operations Opposite or reverse operations.Addition and subtraction are inverse operations,as are multiplication and division. Negative Number A number that is less than zero.A minus sign is used to show that a number is negative.For example,-12 is a negative number. Numerator The top number in a fraction.The numerator represents the number of parts of the whole.For example,5 is the numerator in the fraction. Ordinal Number A number that shows place or position,as in 2nd place. Positive Number A number that is greater than zero.While a minus sign is used to signify a negative number,the absence of a minus sign signifies a positive number. Prime Number A number that can be divided evenly only by itself and 1.For example,7 is a prime number. Square Number A number that results from multiplying another number by itself.For example,49 is the square of 7(7 x 7=49). Square Root of a Number A number that is multiplied by itself to produce a square number.For example,7 is the square root of 49.It is designated by the symbol√. Variable A quantity that can change or vary,taking on different values.It is typically represented by a letter of the alphabet.For example x is the variable in 9x(x can be any number that is being multiplied by 9). 怎么样,这些IGCSE数学单词你都掌握了吗?这些只是在数学中发现的许多单词和术语中的一部分。在你学习数学的过程中,了解你将遇到的单词和术语的含义是很重要的。所以大家一定要做好单词的积累和掌握哦!


IGCSE考试培训
New

IGCSE OPENS
IGCSE预习
IGCSE
课程亮点
1
爱德思和AQA注册认证的考培中心
2
顾问1V1全方位指导,制定专属学习计划
3
使用原版教材和九天独家辅导资料
4
实体教学环境,沉浸式高效学习

学科
经济类
经济学、会计、商务
自然科学类
物理、化学、生物、科学
人文社科类
地理、历史、心理学、社会学
数学及计算机类
数学、高等数学、计算机科学
语言类
英文文学、英文语言、雅思

课程适合人群
1
适用阶段

(1)欲就读于英国或英联邦体系国际学校IGCSE阶段的学生
(2)有英语基础但对IGCSE认识不够全面的学生

IGCSE OPENS
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(1)课前顾问对学生学习能力1对1评估,量身打造课程,帮助学生充分完成课前预习
(2)课中导师双语沟通,对原版教材进行知识点精讲,帮助学生提前适应国外上课方式
(3)课后完成多样化作业并进行学术测试,班主任线上线下24小时答疑

IGCSE OPENS
电与磁之间的关系和原理
在物理课程学习中,电与磁一直以来都是学习中的一大重点,IGCSE物理知识点中也同样包含了大量关于电磁部分的内容。今天未来小编就带大家一起来分析一下电与磁之间的关系和原理,希望能够帮助大家更好的掌握这部分的内容和知识。 首先,相信大家都还记得在IGCSE课本中,我们学到过the magnetic effect of a current,也就是电流可以产生磁场。而电流所产生的磁场方向可以根据right hand grip rule确定,如下图。 同样还可以用右手判断的是由于磁场变化引起的感应电流方向。When a wire moves across a magnetic field,an e.m.f is induced in it.If it is part of a complete circuit,this causes a current to flow.这里需要注意的是产生感应电流的条件是磁场必须被移动的导线切割。 上图所示的是应用Fleming’s right-hand rule判断电流方向的方法。 那么线圈的感应电流方向如何得知呢?大家还记得Lenz’s law么?An induced current always flows in a direction such that it opposes the change which produced it. Answer:N.感应电流方向如图中箭头所示。 应用Lenz’s law,可以很轻易地得知此题的答案,那么线圈中产生的感应电流方向也就可由right hand grip rule推导出了。当带电流的导体做切割磁场运动时,会有一个magnetic force acting on the current-carrying conductor.那么如何判断magnetic force的方向呢?这里我们用到的是Fleming’s left-hand rule.如下图所示: 以上就是小编对于IGCSE物理知识点电与磁内容概念的分析,同学们都掌握了吗?如果对于IGCSE物理知识点内容掌握还有薄弱点的话,可以联系未来线上老师,让专业的IGCSE物理培训老师一对一为你提供学习指导和建议吧!
