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Electromotive force is a measure of the amount of work required to carry a unit of electric charge through a circuit. It is abbreviated as emf or E. The term also refers to the amount of potential energy obtained from an electric source per unit of charge passing through it. Such sources of electromotive force include batteries and electric generators. If 1 joule of electric potential energy is given to each coulomb of charge passing through the source, the emf of the source is 1 joule per… More »
Capacitance, kuh PAS uh tuhns, is the property of a capacitor that determines the amount of... More >>
Electric field exists in the space around a charged body and can be detected by its effect on... More >>
Electromotive force is a measure of the amount of work required to carry a unit of electric... More >>
Frequency modulation, FREE kwuhn see moj uh LAY shuhn, usually called simply FM, is a method of... More >>
Ultrahigh frequency waves (UHF)
Ultrahigh frequency waves (UHF) are a type of short radio wave. Their frequency ranges from 300... More >>
Very high frequency waves, also called VHF waves, are electromagnetic waves in the frequency band... More >>
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