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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...
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...
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 ...
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...
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...
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...
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...
Magnetic Fields in Wires, Coils & Solenoids Magnetic field patterns are not only observed around bar magnets, magnetic fields are formed wherever current is flowing, such as in: Long straight w...
Velocity Selection A velocity selector is defined as: A device consisting of perpendicular electric and magnetic fields where charged particles with a specific velocity can be filtered Velocity sel...
