请到「后台-用户-个人资料」中填写个人说明。
Edexcel IGCSE Physics 复习笔记 2.4.2 Core Practical: Investigating Charging by Friction Core Practical 3: Investigating Charging by Friction Aim of the Experiment The aim of this experiment ...
Edexcel IGCSE Physics 复习笔记 2.4.1 Conductors & Insulators Conductors & Insulators Conductors A conductor is a material that allows charge (usually electrons) to flow through it ea...
Edexcel IGCSE Physics 复习笔记 2.3.5 AC & DC AC & DC Direct Current A direct current (d.c.) is defined as A current that is steady, constantly flowing in the same direction in...
Edexcel IGCSE Physics 复习笔记 2.3.4 Electricity & Heat Electricity & Heat When electricity passes through a component, such as a resistor, some of the electrical energy is turned in...
Edexcel IGCSE Physics 复习笔记 2.3.3 Electrical Safety Electrical Safety Mains electricity is potentially lethal Potential differences as small as 50 V can pose a serious hazard to individua...
Edexcel IGCSE Physics 复习笔记 2.3.2 Calculating Energy Transfers Calculating Energy Transfers Work is done when charge flows through a circuit Work done is equal to the energy transferred &...
Edexcel IGCSE Physics 复习笔记 2.3.1 Electrical Power & Fuses Electrical Power Power is defined as The rate of energy transfer or the amount of energy transferred per second  ...
Edexcel IGCSE Physics 复习笔记 2.2.5 Electrical Components Thermistors & LDRs Thermistors A thermistor is a temperature-dependent resistor It is represented by the following circuit symbol: The...
Edexcel IGCSE Physics 复习笔记 2.2.4 IV Graphs IV Graphs As the potential difference across a component is increased, the current also increases This is because potential difference and curr...
