Edexcel IGCSE Physics: Double Science 復習筆記：3.1.1 Transverse & Longitudinal Waves Transverse & Longitudinal Waves Waves can exist as one of two types: Transverse Longitudinal &nb...
Edexcel IGCSE Physics: Double Science 復習筆記： 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...
Edexcel IGCSE Physics: Double Science 復習筆記： 2.3.4 Electricity & Heat Electricity & Heat When electricity passes through a component, such as a resistor, some of the electrical e...
Edexcel IGCSE Physics: Double Science 復習筆記： 2.3.3 Electrical Safety Electrical Safety Mains electricity is potentially lethal Potential differences as small as 50 V can pose a serious h...
Edexcel IGCSE Physics: Double Science 復習筆記： 2.3.2 Calculating Energy Transfers Calculating Energy Transfers Work?is done when charge flows through a circuit Work done is equal to the?en...
Edexcel IGCSE Physics: Double Science 復習筆記： 2.3.1 Electrical Power & Fuses Electrical Power Power is defined as The rate of energy transfer or the amount of energy transferre...
Edexcel IGCSE Physics: Double Science 復習筆記：2.2.5 Electrical Components Thermistors & LDRs Thermistors A?thermistor?is a?temperature-dependent?resistor It is represented by the follo...
Edexcel IGCSE Physics: Double Science 復習筆記：2.2.4 IV Graphs IV Graphs As the potential difference across a component is increased, the current also increases This is because potential di...
Edexcel IGCSE Physics: Double Science 復習筆記：2.2.3 Resistors in Series Resistors in Series When two or more resistors are connected in series, the?total?(or?combined)?resistance?is equal ...
Edexcel IGCSE Physics: Double Science 復習筆記： 2.2.2 Voltage in Series & Parallel Voltage in Series & Parallel In a series circuit: The?current?is the?same?at all points ie. throug...
Edexcel IGCSE Physics: Double Science 復習筆記：2.2.1 Current in Series & Parallel Current in Series Circuits In a circuit that is a closed-loop, such as a series circuit, the current is...
Edexcel IGCSE Physics: Double Science 復習筆記：2.1.3 Resistance Calculating Current, Resistance & Potential Difference Resistance is defined as the?opposition?to current: The higher the...
