CIE A Level Physics復習筆記22.1.1 The Photon
The Particle Nature of Light In classical wave theory, electromagnetic (EM) radiation is assumed to behave as a wave This is demonstrated by the fact EM radiation exhibits phenomena such as?diffrac...
2023年申請劍橋大學新增My Cambridge Application和AAIF系統
劍橋大學向來是不少學子夢寐以求的高等學府，而劍橋大學的本科申請流程卻略顯復雜。關注劍橋大學的同學們應該知道，申請劍橋大學并不是填寫UCAS就完事了，劍橋大學還有自己的在線申請表需要填寫。 往年劍橋大學要...
CIE A Level Physics復習筆記21.1.5 Smoothing
Smoothing In?rectification, to produce a steady?direct current? or voltage from an?alternating current??or voltage, a?smoothing capacitor?is necessary Smoothing is defined as: The reduction in the ...
CIE A Level Physics復習筆記21.1.4 Rectification
Rectification Graphs Rectification is defined as: The process of converting?alternating current??and voltage into?direct current??and voltage Rectification is used in electronic equipment which req...
CIE A Level Physics復習筆記21.1.3 Mean Power
Mean Power In mains electricity, current and voltage are varying all the time This also means the?power?varies constantly, recall the equations for power: Where: I =?direct?? current (A) V =?direct...
CIE A Level Physics復習筆記21.1.2 Root-Mean-Square Current & Voltage
Root-Mean-Square Current & Voltage Root-mean-square (r.m.s) values of current, or voltage, are a useful way of?comparing?a.c current, or voltage, to its equivalent direct current, or voltage Th...
CIE A Level Physics復習筆記21.1.1 Alternating Current & Voltage
Properties of Alternating Current & Voltage An alternating current (a.c) is defined as: A current which periodically varies from positive to negative and changes its magnitude continuously with...
CIE A Level Physics復習筆記20.2.4 Faraday's & Lenz's Laws
Faraday's & Lenz's Laws Faraday’s law tells us the magnitude of the induced e.m.f in?electromagnetic induction?and is defined as: The magnitude of the induced e.m.f is directly proportional to ...
CIE A Level Physics復習筆記20.2.3 Principles of Electromagnetic Induction
Principles of Electromagnetic Induction Electromagnetic induction is a phenomenon which occurs when an?e.m.f?is induced when a conductor moves through a magnetic field When the conductor cuts throu...
CIE A Level Physics復習筆記20.2.2 Magnetic Flux Linkage
Magnetic Flux Linkage The?magnetic flux linkage?is a quantity commonly used for solenoids which are made of?N?turns of wire Magnetic flux linkage is defined as: The product of the magnetic flux and...
CIE A Level Physics復習筆記20.2.1 Magnetic Flux
Magnetic Flux Definition Electromagnetic induction is when an?e.m.f?is induced in a closed circuit conductor due to it moving through a?magnetic field This happens when a conductor?cuts?through mag...
CIE A Level Physics復習筆記20.1.11 Forces between Current-Carrying Conductors
Origin of the Forces Between Current-Carrying Conductors A current carrying conductor, such as a wire, produces a?magnetic field?around it The direction of the field depends on the direction of the...
