Edexcel A Level Physics:复习笔记3.11 Current & Drift Velocity
Calculating Current & Drift Velocity Drift Velocity In a conductor, the current is due to the movement of charge carriers The charge carriers can be negative or positive However current ...
Edexcel A Level Physics:复习笔记3.10 Core Practical 2: Investigating Resistivity
Core Practical 2: Investigating Resistivity Aims of the Experiment The aim of the experiment is to determine the resistivity of a length of wire Variables Independent variable = Length, L, of the w...
2022年NEC全美经济学挑战赛报名已开启，哪些学生适合参加NEC？
NEC全美经济挑战赛火热报名中，作为为数不多的经济商科方向可选高中国际学术活动，NEC是千万不能错过的高价值学术活动！ NEC全美经济挑战赛介绍 全美经济学挑战赛 (National Economics Challenge) 是美国最具影响...
光华剑桥2022春招考试即日起可预报名！
十月，是招生的黄金季，相信在接下来的一两个月内，2023择校大戏将进入高潮期，提前了解考试流程及内容，才能更加从容地面对春招大战。 而最新消息显示，光华剑桥2023年春季班招生考试将于2022年10月30日周日上午...
Edexcel A Level Physics:复习笔记3.9 Electrical Resistivity
Electrical Resistivity All materials have some resistance to the flow of charge As free electrons move through a metal wire, they collide with ions which get in their way As a result, they t...
Edexcel A Level Physics:复习笔记3.8 Current-Potential Difference Graphs
Current-Potential Difference Graphs As the potential difference (voltage) across a component is increased, the current also increases (by Ohm’s law) The precise relationship between voltage ...
Edexcel A Level Physics:复习笔记3.7 Electrical Power
Electrical Power Work is also defined as a transfer of energy When components transfer electrical energy to other stores, work must be done because energy is transferred Therefore, potential differ...
Edexcel A Level Physics:复习笔记3.6 Resistance in Series & Parallel
Deriving Equations for Resistance in Series & Parallel Resistors In Series When two or more components are connected in series: The combined resistance of the components is equal to the sum of ...
Edexcel A Level Physics:复习笔记3.5 Energy Conservation in Circuits
Energy Conservation in Circuits The Electrical Voltages Rule (Kirchhoff's Second Law) Energy is never used up or lost in a circuit, since everything follows the Law of Conservation of Energy The el...
