Edexcel A Level Physics:复习笔记7.19 Lenz's Law
Lenz's Law Lenz’s Law is used to predict the direction of an induced e.m.f in a coil or wire Lenz's Law is summarised below: The induced e.m.f is set up in a direction to produce effects that oppos...
Edexcel A Level Physics:复习笔记7.18 Induced E.M.F between Linked Coils
Induced E.M.F between Linked Coils An e.m.f can be induced in a coil when there is a change of current in another coil linked with this coil This is what happens in a transformer Transformers A tra...
Edexcel A Level Physics:复习笔记7.17 Induced E.M.F in a Moving Coil
Induced E.M.F in a Moving Coil Electromagnetic induction is a phenomenon which occurs when an e.m.f is induced when a conductor moves through a magnetic field If there is a change in magnetic flux ...
Edexcel A Level Physics:复习笔记7.16 Magnetic Force on a Current-Carrying Conductor
Magnetic Force on a Current-Carrying Conductor A current-carrying conductor produces its own magnetic field An external magnetic field will therefore exert a magnetic force on it A current-c...
Edexcel A Level Physics:复习笔记7.15 Magnetic Force on a Charged Particle
Magnetic Force on a Charged Particle The magnetic force on an isolated moving charged particle, such as a proton, is given by the equation: F = BQv Where: F = magnetic force on the particle (N) B =...
Edexcel A Level Physics:复习笔记7.14 Magnetic Flux Density, Flux & Flux Linkage
Magnetic Flux, Flux Density & Flux Linkage Magnetic Flux Density The strength of a magnetic field is defined by the density of the magnetic field lines, or magnetic flux density, at that point ...
AP计算机科学A学习什么内容？附CB官方推荐学习网站
大学打算学习计算机，AI人工智能等方向专业的同学在AP课程阶段肯定少不了会选择计算机科学这一科；本期我们就来给各位同学讲讲这门奇妙的课程！ AP计算机科学课程系列包括两门课程，学生可以选择以任意顺序修读或...
美国大学AP换分政策是什么？AP成绩到底有多重要？
很多打算出国读本科的同学们，都希望能提前学习些课程，来应对进入大学后的学习形式变化，以及保证优秀的GPA成绩。对于打算来北美的同学们，可以说AP课程能满足大家的这一点需求。完成课程后能和意向大学兑换分数...
2022上海国际高中“四校八大”已公布，2023年上海国际学校春招开启！
近日，备受留学家庭瞩目的2022年沪上国际高中“四校八大”评选已落下帷幕，名单一出，引起了不少留学家庭的讨论。虽然这份榜单成立时间并不久，但是其中的一些学校排名变化还是可以给身在上海，并且致力于申请国外...
Edexcel A Level Physics:复习笔记7.13 Exponential Discharge in a Capacitor
Exponential Discharge in a Capacitor The Discharge Equation When a capacitor discharges through a resistor, the charge stored on it decreases exponentially The amount of charge remaining on the cap...
Edexcel A Level Physics:复习笔记7.12 Core Practical 11: Investigating Capacitor Charge & Discharge
Required Practical: Charging & Discharging Capacitors Aim of the Experiment The overall aim of this experiment is to calculate the capacitance of a capacitor. This is just one example of how th...
Edexcel A Level Physics:复习笔记7.11 Charge & Discharge Curves
Charge & Discharge Curves Charging Curves Capacitors are charged by a power supply (e.g. a battery) When charging, electrons are 'pulled' from the plate connected to the positive terminal of th...
