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...
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...
Edexcel A Level Physics:复习笔记7.10 Energy Stored by a Capacitor
Energy Stored by a Capacitor When charging a capacitor, the power supply 'pushes' electrons to one of the metal plates It therefore does work on the electrons and electrical energy becomes stored o...
Edexcel A Level Physics:复习笔记7.9 Capacitance
Capacitance Capacitors are electrical devices used to store energy in electronic circuits, commonly for a backup release of energy if the power fails Capacitors do this by storing electric charge, ...
2023夏季A-Level/GCSE大考计划公布，高分比例将整体下降！
转眼开学已有一个多月，国内各省市陆续发布新学期阶段学习/考试等政策，和体制内一样，英国教育部也在“黄金九十月”发布GCSE最新政策。 9月下旬，英国教育部(Department of Education)和考试监管机构Ofqual(The Of...
Edexcel A Level Physics:复习笔记7.8 Representing Radial & Uniform Electric Fields
Using Field Lines & Equipotential Diagrams The direction of electric fields is represented by electric field lines Electric field lines are directed from positive to negative Therefore, the fie...
Edexcel A Level Physics:复习笔记7.7 Electric Potential for a Radial Field
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