AQA A Level Physics复习笔记7.10.1 Alternating Current & Voltage
Sinusoidal & Root-Mean-Square Current & Voltage An alternating current (a.c) is defined as: A current which periodically varies between a positive to a negative value with time This ...
AQA A Level Physics复习笔记7.9.6 Required Practical: Investigating Flux Linkage on a Search Coil
Required Practical: Investigating Flux Linkage on a Search Coil Aims of the Experiment The overall aim of this experiment is to determine how the magnetic flux linkage varies with the angle ...
AQA A Level Physics复习笔记7.9.5 Applications of EM Induction
Moving Conductors in a Magnetic Field Similar to a coil or a solenoid, a straight conducting rod moving through a magnetic field will also have an e.m.f induced in it This is only when the c...
AQA A Level Physics复习笔记7.9.4 Faraday's & Lenz's Laws
Faraday's & Lenz's Laws Faraday's Law links the rate of change of flux linkage with e.m.f It is defined as: The magnitude of the induced e.m.f is directly proportional to the rate of cha...
AQA A Level Physics复习笔记7.9.3 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 cut...
AQA A Level Physics复习笔记7.9.2 Magnetic Flux Linkage
Magnetic Flux Linkage More coils in a wire mean a larger e.m.f is induced The magnetic flux linkage is a quantity commonly used for solenoids which are made of N turns of wire The flux linka...
AQA A Level Physics复习笔记7.9.1 Magnetic Flux
Magnetic Flux Electromagnetic induction is when an e.m.f is induced in a closed circuit conductor due to it moving through a magnetic field Examples are a flat coil or a solenoid This...
AQA A Level Physics复习笔记7.8.6 Required Practical: Investigating Magnetic Fields in Wires
Required Practical: Investigating Magnetic Fields in Wires Aims of the Experiment The overall aim of this experiment is to calculate the magnetic flux density of a magnet This is done by mea...
AQA A Level Physics复习笔记7.8.5 Circular Path of Particles
Motion of a Charged Particle in a Magnetic Field A charged particle in uniform magnetic field which is perpendicular to its direction of motion travels in a circular path This is because the...
