Edexcel IGCSE Physics 復(fù)習(xí)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 to the?sum?of the...
Edexcel IGCSE Physics 復(fù)習(xí)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. through each component T...
Edexcel IGCSE Physics 復(fù)習(xí)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 the?same value a...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 2.1.3 Resistance Calculating Current, Resistance & Potential Difference Resistance is defined as the?opposition?to current: The higher the resistance of a ...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 2.1.2 Voltage & Energy Voltage The terminals of a cell make one end of the circuit?positive?and the other?negative This sets up a?potential difference?acro...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 2.1.1 Charge & Current Current Electric current is defined as?the rate of flow charge In other words, the size of an electric current is the amount of char...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 1.4.3 Centre of Gravity Centre of Gravity The centre of gravity of an object (sometimes called the centre of mass) is defined as: The point through which the weight o...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 1.4.2 The Principle of Moments The Principle of Moments The principle of moments states that: If an object is balanced, the total clockwise moment about...
Edexcel IGCSE Physics 復(fù)習(xí)筆記 1.4.1 Moments The Moment of a Force As well as causing objects to speed up, slow down, change direction and deform, forces can also cause objects to?rotate An ...
